diff --git a/frontend/src/locales/ja.json b/frontend/src/locales/ja.json
index 72f2392c2d..6944f91cb0 100644
--- a/frontend/src/locales/ja.json
+++ b/frontend/src/locales/ja.json
@@ -4,6 +4,10 @@
   "banner.button.agree": "承認する",
   "banner.privacyPolicy": "プライバシーポリシー",
   "banner.text": "本ウェブサイトでは、あなたの閲覧状況やトラフィックの利用状況等を計測するため、cookieあるいは類似の技術を利用しています。私達が利用するデータの利用法や用途についてはこちら {link} を御覧ください。\"承認する\" をクリックすることで、cookieの利用に同意したとみなされます。",
+  "banner.button.close": "Close",
+  "banner.button.learnmore": "Learn More",
+  "banner.title.notification": "Important notification for users",
+  "banner.text.archivalNotification": "Attention: as part of the ongoing maintenance of the Tasking Manager, projects created before 2020 will be archived.",
   "comment.input.imageUpload.error": "画像のアップロードに失敗しました。",
   "comment.input.imageUpload.progress": "ファイルアップロード...",
   "comment.input.sending.progress": "メッセージ送信...",
@@ -11,6 +15,13 @@
   "comment.input.sending.error": "An error occurred while sending message.",
   "comment.hashtags.help.managers": "プロジェクトマネージャにあなたのコメントを通知するために\"{hashtag}\"を追加してください。",
   "comment.hashtags.help.author": "プロジェクト作者にあなたのコメントを通知するために\"{hashtag}\"を追加してください。",
+  "comment.hashtags.help.contributors": "Add \"{hashtag}\" to notify the task contributors about your comment.",
+  "comment.preview.nothingToPreview": "Nothing to preview",
+  "comment.preview.leaveAComment": "Leave a comment...",
+  "textarea.write": "Write",
+  "textarea.preview": "Preview",
+  "comment.write.attachImage": "Attach image by dragging and dropping",
+  "comment.write.markdownSupported": "Markdown supported",
   "mytasks.mainSection.title": "自分のタスク",
   "mytasks.contribution": "貢献",
   "mytasks.filter.all": "全て",
@@ -19,8 +30,12 @@
   "mytasks.filter.invalidated": "追加のマッピングが必要",
   "mytasks.filter.archived": "アーカイブ済みプロジェクト",
   "mytasks.placeholder.search_project": "プロジェクトIDで検索",
+  "mytasks.placeholder.noMatchingProjectId": "No matching project ID",
   "mytasks.filter.projects": "プロジェクト",
   "mytasks.filter.tasks": "タスク",
+  "mytasks.filter.recentlyEdited": "Recently edited",
+  "mytasks.filter.projectId": "Project ID",
+  "mytasks.filter.sortBy": "Sort by",
   "mytasks.filter.clear": "フィルタを解除",
   "mytasks.navFilters.error": "タスクのロード中にエラーが発生",
   "mytasks.pagination.count": "全 {total} 中、{number} を表示",
@@ -33,33 +48,50 @@
   "mytasks.unlock": "アンロック {time}",
   "mytasks.tasks.title": "タスク #{task} · プロジェクト #{project}",
   "mytasks.tasks.button.retry": "再実行",
-  "mytasks.tasks.comments.number": "{number, plural, other {}}",
+  "mytasks.tasks.comments.number": "{number, plural, one {# comment} other {# comments}}",
   "deleteModal.status.processing": "処理中",
   "deleteModal.status.success": "{type} が正常に削除されました。",
+  "deleteModal.status.success.projects": "Project deleted successfully.",
+  "deleteModal.status.success.teams": "Team deleted successfully.",
+  "deleteModal.status.success.organisations": "Organisation deleted successfully.",
+  "deleteModal.status.success.partners": "Partner deleted successfully.",
+  "deleteModal.status.success.interests": "Interest deleted successfully.",
+  "deleteModal.status.success.licenses": "License deleted successfully.",
+  "deleteModal.status.success.comments": "Comment deleted successfully.",
+  "deleteModal.status.success.campaigns": "Campaign deleted successfully.",
   "deleteModal.status.failure.projects": "このプロジェクトの削除中にエラーが発生しました。",
   "deleteModal.status.failure.organisations": "組織情報の削除中にエラーが発生しました。",
+  "deleteModal.status.failure.partners": "An error occurred when trying to delete this partners.",
   "deleteModal.status.failure.interests": "このインタレストの削除中にエラーが発生しました。",
   "deleteModal.status.failure.licenses": "ライセンスの削除中にエラーが発生しました。",
   "deleteModal.status.failure.campaigns": "このキャンペーンの削除中にエラーが発生しました。",
   "deleteModal.status.failure.notifications": "この通知の削除中にエラーが発生しました。",
   "deleteModal.status.failure.teams": "このチームの削除中にエラーが発生しました。",
+  "deleteModal.status.failure.comments": "An error occurred when trying to delete this comment.",
   "deleteModal.button.delete": "削除",
+  "deleteModal.status.failure.InternalServerErrorError": "Something has gone wrong on the server, but the server could not be more specific on what the exact problem is.",
+  "deleteModal.status.failure.HasMappedTasksError": "Project has mapped tasks, cannot be deleted.",
   "deleteModal.button.cancel": "キャンセル",
   "deleteModal.title.projects": "このプロジェクトを削除しますか?",
   "deleteModal.title.organisation": "組織情報を削除してよいですか？",
+  "deleteModal.title.partners": "Are you sure you want to delete this partner?",
   "deleteModal.title.licenses": "このライセンスを削除してよろしいですか？",
   "deleteModal.title.interests": "このカテゴリを削除しますか?",
   "deleteModal.title.campaigns": "このキャンペーンを削除しますか？",
   "deleteModal.title.notifications": "この通知を削除しますか？",
   "deleteModal.title.teams": "このチームを削除しますか?",
+  "deleteModal.title.comments": "Are you sure you want to delete this comment?",
+  "deleteModal.error.OrgHasProjectsError": "Organisation has some projects. Please delete them first.",
   "header.nav.projects": "プロジェクト",
   "header.nav.learn": "解説",
   "header.nav.aboutLink": "バージョン情報",
+  "header.nav.support": "Support",
   "header.nav.my_contributions": "協力履歴",
   "header.nav.manage": "管理",
   "header.buttons.logIn": "ログイン",
+  "header.nav.partners": "Partners",
   "header.buttons.signUp": "登録",
-  "header.buttons.createAccount": "",
+  "header.buttons.createAccount": "Create an account",
   "header.buttons.authorize": "ログイン",
   "signUp.modal.authorize": "OpenStreetMapへの登録は済んでいますか？",
   "signUp.authorize.message": "マッピングをはじめましょう！ あなたのOpenStreetMapアカウントでTasking Managerにログインしてください。",
@@ -89,11 +121,12 @@
   "emailUpdate.modal.text1": "マッピングを開始する前に、メールアドレスを追加してください。",
   "emailUpdate.modal.text2": "マッピングは一人ではなく、みんなで行うものです！あなたにフィードバックやダイレクトメッセージを届けるため、メールアドレスの登録が必要です。",
   "emailUpdate.modal.privacy_policy": "プロジェクトに参加しているユーザの個人情報取り扱いに関しては、プライバシーポリシーに詳細が記載されています。",
-  "serviceWorker.dialog.newVersion": "",
-  "serviceWorker.dialog.update": "",
-  "serviceWorker.dialog.remindMeLater": "",
+  "serviceWorker.dialog.newVersion": "Tasking Manager has been updated.",
+  "serviceWorker.dialog.newVersionAvailableLineTwo": "Click the button to refresh and ensure the page is displayed correctly.",
+  "serviceWorker.dialog.update": "Refresh",
+  "serviceWorker.dialog.remindMeLater": "Remind me later",
   "home.mainSection.title": "地図を届けよう 必要とする人へ",
-  "home.mainSection.lead": "",
+  "home.mainSection.lead": "Join a global community extracting information from old maps and creating a searchable map of world history.",
   "home.callToAction.title": "あなたの協力が必要です。",
   "home.callToAction.firstLeadLine": "マッピングには誰でも参加できます。これからマッピングを始めてみたいかたは{link}ページをご覧ください",
   "home.callToAction.secondLeadLine": "マッピング経験豊富なみなさんは、以下をクリックしてプロジェクトを探してみてください",
@@ -106,8 +139,9 @@
   "home.stats.edits": "マップ編集総計",
   "home.stats.community": "参加マッパー数",
   "home.stats.mappers": "オンラインのマッパー",
+  "home.stats.loading.error": "An error occured while loading the stats",
   "home.mappingFlow.title": "災害によって毎年約{number}人が命を落とし、2億人が被災や避難を強いられています。この状況を変える手段のひとつが、マッピングです。",
-  "home.mappingFlow.headLine": "",
+  "home.mappingFlow.headLine": "Teams of historical mappers can use Tasking Manager to coordinate mapping across world and help connect mappers with shared interests.",
   "home.mappingFlow.cards.mapping.title": "マッピング",
   "home.mappingFlow.cards.validation.title": "妥当性検査",
   "home.mappingFlow.cards.usingData.title": "データの使用",
@@ -125,8 +159,8 @@
   "home.contact.contacterMessage": "メッセージ",
   "home.contact.contacterHeadText": "一緒に手を動かしませんか？ 質問やフィードバックがあるようでしたら、以下のフォームからチームへ連絡できます。",
   "home.contact.submit": "送信",
-  "home.contact.serviceDesk": "",
-  "home.contact.serviceDesk.description": "",
+  "home.contact.serviceDesk": "Service Desk",
+  "home.contact.serviceDesk.description": "You can also contact us through our <b>{link}</b>.",
   "home.testimonials.title": "あなたの手で世界に変化を",
   "home.testimonials.ifrc.citation": "IFRCはサイクロン・アイダイ（Cyclone Idai）に対応するにあたり、洪水の浸水域を把握し、被災者の探索と救助を行うために必要な地図を探し求めていました。病院など医療施設として利用されている建物の特定作業という依頼を受けた私達は、チームでその作業に対応することにより、被災状況のアセスメントや医療ニーズの把握に成功しました。",
   "home.testimonials.ifrc.bio": "サイクロン・アイダイに対応するIFRC情報管理チームへの、遠隔からの協力作業",
@@ -137,17 +171,27 @@
   "footer.credits": "フリーでオープンな本ソフトウェアは、Humanitarian OpenStreetMapの提供でお届けします。",
   "footer.learn": "OpenStreetMapについて",
   "footer.privacyPolicy": "プライバシーポリシー",
+  "footer.license": "Images and screenshots of the Tasking Manager may be shared under a Creative Commons Attribution-Sharealike 4.0 International License",
   "mapping.level.all": "すべてのレベル",
   "mapping.level.advanced": "上級マッパー",
   "mapping.level.intermediate": "中級マッパー",
   "mapping.level.beginner": "初心者マッパー",
+  "mapping.difficulty.all": "All",
+  "mapping.difficulty.advanced": "Easy",
+  "mapping.difficulty.moderate": "Moderate",
+  "mapping.difficulty.beginner": "Challenging",
   "project.typesOfMapping.roads": "道路",
   "project.typesOfMapping.buildings": "建物",
   "project.typesOfMapping.landUse": "土地利用",
   "project.typesOfMapping.waterways": "河川・水路",
   "project.typesOfMapping.other": "その他",
   "project.typesOfMapping.pointsOfInterest": "地物数",
+  "browser.webgl.unsupported.title": "WebGL Context Not Found",
+  "browser.webgl.unsupported.description": "Your browser does not support WebGL, which is required to render map components. Please try using a different browser or check that <a>WebGL is enabled</a>.",
+  "common.loading": "Loading...",
+  "editor.layer.gpx.name": "Task for project {projectId}. Do not edit outside of this area!",
   "notifications.mainSection.title": "通知",
+  "notifications.singular.notification": "notification",
   "notifications.filter.all": "全て",
   "notifications.filter.messages": "メッセージ",
   "notifications.bodytitle.message": "メッセージ",
@@ -156,11 +200,16 @@
   "notifications.filter.projects": "プロジェクト",
   "notifications.filter.clear": "フィルタを解除",
   "notifications.markAsRead": "既読にする",
+  "notifications.selectAll": "Select all {count} notifications {activeTab, select, all {} other {in {activeTab}}}",
+  "notifications.allNotificationsSelected": "All {count} notifications {activeTab, select, all {} other {in {activeTab}}} are selected. ",
+  "notifications.allPageNotificationsSelected": "All notifications on this page are selected.",
+  "notifications.clearSelection": "Clear selection",
+  "notifications.errorLoadingNotifications": "There was an error while loading your notifications",
   "notifications.navFilters.error": " {yWord}中の {xWord} ロードに失敗",
   "notifications.navFilters.error.simple": "{xWord} の読み込み失敗",
   "notifications.pagination.count": "全 {total} 中、{number} を表示",
   "notifications.nav.new.one": "新規1メッセージ",
-  "notifications.nav.new.plural": "新規 {n} メッセージ",
+  "notifications.nav.unread.plural": "{n} unread",
   "notifications.nav.viewAll": "すべてを表示",
   "notifications.nav.goToNotifications": "通知表示",
   "notifications.nav.noUnread": "未読メッセージはありません。",
@@ -184,6 +233,41 @@
   "notifications.message.type.task_comment_notification": "タスクコメント",
   "notifications.message.type.project_chat_notification": "プロジェクトチャット",
   "notifications.message.type.project_activity_notification": "プロジェクト活動",
+  "management.partners.button.save": "Save",
+  "management.partners.button.cancel": "Cancel",
+  "management.partners.stats.title": "Statistics",
+  "management.partners.edit": "Edit",
+  "management.partners.fields.name": "Name",
+  "management.partners.fields.image": "Image",
+  "management.messages.notAllowedPartners": "You are not allowed to manage partners.",
+  "management.partners.link": "Link",
+  "management.partners.currentProjects.startMapping": "Start mapping",
+  "management.partners.link.manage": "Manage {entity}",
+  "management.partners.filter.buildingsStats": "Buildings mapped",
+  "management.partners.contributors": "Contributors",
+  "management.partners.filter.roadsStats": "Km road mapped",
+  "management.partners.filter.editsStats": "Total map edits",
+  "partners.group.zero": "No partners group yet",
+  "management.partners.activity.edits": "Total Map Edits",
+  "management.partners.activity.buildings": "Buildings Mapped",
+  "management.partners.activity.roads": "KM of Roads Mapped",
+  "management.partners.activity.users": "Users",
+  "partners.readMoreButton": "Read more",
+  "management.partners.learnToMap": "Learn to Map",
+  "management.filter.buttons.myPartners": "My Partners",
+  "management.filter.textarea.searchPartners": "Search partners...",
+  "management.partner": "Partner",
+  "management.partners": "Partners",
+  "management.partners.list.empty": "No partners were found.",
+  "management.partners.titles.partner_information": "Partner information",
+  "management.partners.titles.partner_permalink": "Permalink",
+  "management.partners.titles.partner_primaryhashtag": "Primary hashtag",
+  "management.partners.titles.partner_secondaryhashtag": "Secondary hashtag",
+  "management.partners.titles.partner_logo": "Logo",
+  "management.partners.titles.partner_metaLink": "Meta Link",
+  "management.partners.titles.partner_xLink": "X Link",
+  "management.partners.titles.partner_instagramLink": "Instagram Link",
+  "management.partners.titles.partner.currentProjects": "Current projects",
   "project.card.contributorCount": "協力者の合計 {number} 人",
   "project.card.lastContribution": "以前の参加",
   "project.card.percentMapped": "{n}% マップ完了",
@@ -201,7 +285,9 @@
   "project.card.edit_project.button": "編集",
   "project.card.project_page.button": "プロジェクトページ",
   "project.card.project_tasks.button": "タスク",
-  "management.projects.create.title": "",
+  "project.detail.noDueDate": "No due date specified",
+  "project.detail.dueDateExpired": "Due date expired",
+  "management.projects.create.title": "Create new project",
   "management.projects.clone.message": "新規プロジェクトは #{id} ({name}) のクローンです。",
   "management.projects.create.clone": "複製",
   "management.projects.create.area_size": "エリア面積：{area} km {sq}",
@@ -221,8 +307,8 @@
   "management.projects.create.trim_tasks.description.1": "タスクグリッドをトリムして Area of interestを作成 (オプション)",
   "management.projects.create.trim_tasks.description.2": "現在のタスクを続行するか、プロジェクト対象地域の切り取りを行うことができます。切り取り処理には少し時間がかかります。",
   "management.projects.create.trim_tasks.trim_to_aoi": "タスクを切り取って、マッピング対象のArea of Interestを指定します。",
-  "management.projects.create.trim_tasks.tiny_tasks": "{number, plural, other {}}",
-  "management.projects.create.trim_tasks.tiny_tasks.discard": "",
+  "management.projects.create.trim_tasks.tiny_tasks": "{number, plural, one {There is # task smaller than {area}m². Would you like to discard it?} other {There are # tasks smaller than {area}m². Would you like to discard them?}}",
+  "management.projects.create.trim_tasks.tiny_tasks.discard": "Discard",
   "management.projects.create.task_sizes.description": "通常のタスクのサイズ",
   "management.projects.create.task_sizes.smaller": "縮小",
   "management.projects.create.task_sizes.larger": "拡大",
@@ -230,15 +316,17 @@
   "management.projects.create.errors.unsupported_geom": "未対応のジオメトリタイプ {geometry}",
   "management.projects.create.errors.no_featurecollection": "タイプフィールドが FeatureCollection ではありません",
   "management.projects.create.errors.closed_linestring": "ポイントが、閉じたラインストリングを構成していません",
-  "management.projects.create.errors.no_geometry": "",
-  "management.projects.create.errors.no_organization": "",
+  "management.projects.create.errors.no_project_name": "Name is a required field.",
+  "management.projects.create.errors.project_name_validation_error": "Project name should start with an alphabet.",
+  "management.projects.create.errors.no_geometry": "You need to define the project's area of interest.",
+  "management.projects.create.errors.no_organization": "Organization is a required field.",
   "management.projects.create.errors.fileSize": "アップロードできるファイルの大きさは {fileSize} MBまでです。ファイルのサイズを縮小して、再度アップロードを実行してください。",
   "management.projects.create.split_task.description": "特定のタスクをクリックするか、マップ上の領域を描画して、タスクを小さくします。",
   "management.projects.create.reset.button": "リセット",
-  "management.projects.create.show_aois": "",
-  "management.projects.create.show_aois.disabled": "",
-  "management.projects.create.show_aois.enable": "",
-  "management.projects.create.show_aois.legend": "",
+  "management.projects.create.show_aois": "Show existing projects AoIs",
+  "management.projects.create.show_aois.disabled": "Zoom in to be able to activate the visualization of other projects' areas of interest.",
+  "management.projects.create.show_aois.enable": "Enable the visualization of the existing projects' areas of interest.",
+  "management.projects.create.show_aois.legend": "Color legend:",
   "management.projects.create.split.tasks.number": "新しいプロジェクトが {n} 個のタスクで作成されます。",
   "management.projects.create.split.tasks.area": "各タスクのサイズは約 {area} km {sq} です。",
   "management.projects.create.split_task.draw.button": "分割するエリアを描画",
@@ -247,17 +335,19 @@
   "management.projects.create.button.back": "前に戻る",
   "management.projects.create.button.next": "次へ",
   "management.projects.create.button.trim": "トリム",
+  "management.projects.create.trimError": "An error occured while trimming the geometry.",
+  "management.projects.create.SelfIntersectingAOIError": "Invalid geometry - polygon is self intersecting.",
   "management.projects.create.button.draw": "描画",
   "management.projects.create.button.select_file": "ファイルの選択",
   "management.projects.create.arbitrary_tasks": "アップロードされたポリゴンを使用してタスクを設定する",
   "management.projects.create.draw.description": "地図に関心領域を描画するか、ファイルをインポートします。",
-  "management.projects.create.upload.description": "",
+  "management.projects.create.upload.description": "The supported file formats are: GeoJSON, KML, OSM or zipped Shapefile. You can drag and drop a file over the map to import it.",
   "project.detail.teams.empty": "プロジェクトへのチーム割当はありません。",
   "project.detail.coordination": "コーディネート",
   "project.detail.coordination.description": "このプロジェクトは {user} が作成し、 {organisation} がコーディネートしています。",
   "project.detail.createdBy": "プロジェクト作成者 {user}",
-  "project.detail.contributorCount.zero": "",
-  "project.detail.contributorCount": "{number, plural, other {}}",
+  "project.detail.contributorCount.zero": "No contributors yet",
+  "project.detail.contributorCount": "{number, plural, one {<b>#</b> contributor} other {<b>#</b> contributors}}",
   "project.detail.lastContribution": "以前の参加",
   "project.detail.percentMapped": "マッピング済",
   "project.detail.percentValidated": "検証済み",
@@ -267,6 +357,7 @@
   "project.detail.projectPriorityLow": "薄い",
   "project.detail.dueDateLeft": "残り {daysLeftHumanize}",
   "project.detail.typesOfMapping": "マッピング対象",
+  "project.detail.private": "Private",
   "project.detail.editProject": "プロジェクト編集",
   "project.detail.editor": "エディタ",
   "project.detail.editor.select": "エディタの選択",
@@ -282,7 +373,8 @@
   "project.detail.addToFavorites": "お気に入りに追加",
   "project.detail.removeFromFavorites": "お気に入りから削除",
   "project.detail.questionsAndComments.none": "現在、このプロジェクトに関する質問やコメントはありません。 最初の投稿をしましょう。",
-  "project.detail.questionsAndComments.login": "",
+  "project.detail.questionsAndComments.login": "Log in to be able to post comments.",
+  "project.detail.questionsAndComments.fetching.error": "An error occured while loading questions and comments.",
   "project.detail.questionsAndComments.button": "投稿",
   "project.detail.share": "共有",
   "project.detail.team": "チーム",
@@ -299,15 +391,19 @@
   "project.detail.cards.mapthroughosm.description": "マッピングを初めて行う場合は、開始する前に学習ページで手順を確認することをお勧めします。",
   "project.detail.cards.submityourwork.description": "データを保存するには、作業内容を登録することが必要です。",
   "project.detail.sections.overview": "概要",
-  "project.detail.sections.overview.dueDate": "",
+  "project.detail.sections.overview.dueDate": "Ideal date to complete the project",
   "project.detail.sections.description": "説明",
   "project.detail.sections.questionsAndComments": "質問とコメント",
   "project.detail.sections.contributions": "協力",
   "project.detail.sections.contributionsTimeline": "マッピング結果のタイムライン",
+  "project.detail.sections.downloadOsmData": "Download OSM Data",
+  "project.detail.sections.errorDownloadOsmData": "Data Extraction Unavailable",
+  "project.detail.sections.errorDownloadOsmDataDescription": "The data extract you are attempting to download is currently inactive or unavailable. Please ensure that the extract is active and try again later.",
   "project.detail.sections.contributions.osmcha": "OSMChaで変更セットを表示",
   "project.detail.sections.contributions.changesets": "変更セット",
   "project.detail.sections.contributors": "参加者",
-  "project.detail.sections.relatedProjects": "関連プロジェクト",
+  "project.detail.sections.similarProjects": "Similar projects",
+  "project.detail.sections.contributors.error": "An error occured while loading contributors",
   "project.detail.sections.contributions.timelineError": "タイムラインを表示するには、1つ以上のタスクをマップする必要があります。",
   "project.status.draft": "下書き",
   "project.status.archived": "アーカイブ済み",
@@ -319,20 +415,26 @@
   "projects.data.download.aoi": "AOIをダウンロード",
   "projects.data.download.taskGrid": "タスクグリッドをダウンロード",
   "projects.link.stats": "追加の統計",
-  "projects.stats.mapped": "",
-  "projects.stats.validated": "",
+  "projects.stats.mapped": "Mapped tasks",
+  "projects.stats.validated": "Validated tasks",
   "project.share.twitter": "{site}のプロジェクト#{id}のマッピングに貢献する",
   "project.share.facebook": "フェイスブックで投稿する",
   "project.share.linkedin": "LinkedInで共有",
+  "project.inaccessible.title": "You don't have permission to access this project",
+  "project.inaccessible.description": "Please contact the project manager to request access.",
+  "project.inaccessible.exploreOtherProjects": "Explore other projects",
+  "project.noSimilarProjectsFound": "Could not find any similar projects for this project",
   "projects.formInputs.privacy.title": "プライバシー",
   "projects.formInputs.privacy.field": "プライベートプロジェクト",
   "projects.formInputs.privacy.description": "プライベート状態のプロジェクトには、特定のチームメンバーだけがアクセスし、マッピングと確認作業を行うことができます。このオプション設定は、マッピングと確認作業の権限設定よりも優先して適用されます。",
   "projects.formInputs.teams.title": "チーム",
+  "projects.teams.teamsPermissionNote": "Note: Mappers have mapping permissions. Validators have mapping and validation permissions. Project managers have mapping and validation permissions as well as the access to the management sections.",
   "projects.formInputs.organisation.title": "組織",
   "projects.formInputs.campaign.title": "キャンペーン",
   "projects.formInputs.categories.title": "カテゴリ",
   "projects.formInputs.organisation.description": "このプロジェクトの調整役になっている組織名。必ず設定されているわけではありません。組織の管理者は対象となるプロジェクトの管理権限を有しています。",
-  "projects.formInputs.imagery.select": "",
+  "projects.formInputs.admins.title": "TM Admins",
+  "projects.formInputs.imagery.select": "Select imagery",
   "projects.formInputs.license.select": "ライセンス選択",
   "projects.formInputs.organisation.select": "組織を選択",
   "projects.formInputs.campaign.select": "キャンペーン選択",
@@ -379,6 +481,15 @@
   "projects.actions.reset_all_tasks.error": "なんらかの理由により全てのタスクのリセットに失敗しました。",
   "projects.actions.clone_project.button": "クローンプロジェクト",
   "projects.actions.clone_project.description": "概要や解説文、メタデータ等すべての情報を新しいプロジェクトへコピーします。Area of Interestやタスク、優先エリアはコピーされませんので、再度対象指定したり、矩形をインポートしたりする必要があります。この方法で複製したプロジェクトのステータスは下書き状態になります。",
+  "projects.actions.revert_validated_tasks.button": "Revert validated tasks",
+  "projects.actions.revert_validated_tasks.title": "Revert validated tasks",
+  "projects.actions.revert_validated_tasks.description": "Revert all validated tasks by a specified user and mark it as mapped",
+  "projects.actions.revert_validated_tasks.success": "The tasks were reverted successfully.",
+  "projects.actions.revert_unavailable_tasks.button": "Revert unavailable tasks",
+  "projects.actions.revert_unavailable_tasks.title": "Revert unavailable tasks",
+  "projects.actions.revert_unavailable_tasks.description": "Revert all tasks marked as unavailable by a specified user and mark it as ready to map",
+  "projects.actions.revert_unavailable_tasks.success": "The tasks were reverted successfully.",
+  "projects.actions.revert_validated_tasks.error": "The tasks reversion failed.",
   "projects.actions.transfer_project.button": "プロジェクトを転送",
   "projects.actions.transfer_project.title": "プロジェクト管理権限の移譲",
   "projects.actions.transfer_project.alert": "間違って権限移譲を実施してしまった場合、新しい権利保持者に変更を取り消ししてもらうよう依頼してください。",
@@ -398,22 +509,26 @@
   "projects.formInputs.priority": "優先度",
   "projects.formInputs.license": "要ライセンス",
   "projects.formInputs.language": "デフォルトの言語",
-  "projects.formInputs.language.translations": "",
-  "projects.formInputs.language.select": "",
+  "projects.formInputs.type": "Type here...",
+  "projects.formInputs.language.translations": "Translations",
+  "projects.formInputs.language.select": "Select a language above to translate.",
   "projects.formInputs.mapping_editors": "マッピング用のエディタ",
   "projects.formInputs.validation_editors": "検証用のエディタ",
   "projects.formInputs.editors.options.custom": "カスタムエディタ",
   "projects.formInputs.random_task_selection": "ランダムにタスクを選択する",
   "projects.formInputs.random_task_selection.mapping": "マッピングのタスクをランダムに選択する",
   "projects.formInputs.random_task_selection.description": "チェックを入れると、ユーザーは最初の編集タスクをランダムで行う必要があります（マネージャと管理者は例外）。",
+  "projects.formInputs.rapid_power_user": "Enable Rapid Power User Features",
+  "projects.formInputs.rapid_power_user.description": "If checked, Rapid will load with the power user dialog enabled.",
   "projects.formInputs.imagery": "画像",
   "projects.formInputs.imagery.note": "TMS URLs: {exampleUrl} の書式に従ってください。",
   "projects.formInputs.priority_areas.options.polygon": "ポリゴンを描く",
   "projects.formInputs.priority_areas.options.rectangle": "四角形を描く",
   "projects.formInputs.priority_areas.action.clear": "選択解除",
-  "projects.formInputs.priority_areas.action.selectFile": "",
-  "projects.formInputs.priority_areas.upload.description": "",
+  "projects.formInputs.priority_areas.action.selectFile": "Select File",
+  "projects.formInputs.priority_areas.upload.description": "The supported file formats are: GeoJSON, KML, OSM or zipped Shapefile. You can drag and drop a file over the map to import it.",
   "projects.formInputs.name": "プロジェクト名",
+  "management.projects.edit.errors.project_name_validation_error": "Project name should start with an alphabet.",
   "projects.formInputs.dueDate": "期限",
   "projects.formInputs.dueDate.description": "プロジェクトが終了する理想的な日付を定義します。日付の形式は日/月/年です。",
   "projects.formInputs.description": "説明",
@@ -421,18 +536,19 @@
   "projects.formInputs.instructions": "詳しい説明",
   "projects.formInputs.osmcha_filter_id": "OSMChaフィルタID",
   "projects.formInputs.osmcha_filter_id.description": "OSMChaのフィルタIDを指定しておくことで、このプロジェクトをOSMChaで表示する際にカスタムフィルタを適用することができます。この設定を行うことで、標準のフィルタ設定がすべて上書きされることに注意してください。例: 095e8b31-b3cb-4b36-a106-02826fb6a109 (OSMChaで保存されているフィルタのURLを入力してもかまいません。システムは自動的にフィルタのIDを抽出し、適用します)",
-  "projects.formInputs.priority_areas.description": "",
+  "projects.formInputs.priority_areas.description": "If you want mappers to work on the highest priority areas first, draw one or more polygons within the project area or import a file.",
   "projects.formInputs.mapping_types": "マッピング対象",
   "projects.formInputs.id_presets": "iD エディタのプリセット",
   "projects.formInputs.user_role": "ユーザのロール",
-  "projects.formInputs.mapper_level": "マッパーレベル",
-  "projects.formInputs.mapper_level.description": "レベルを設定することで、マッパーが最適なプロジェクトを探す際に役立ちます。",
+  "projects.formInputs.difficulty": "Difficulty",
+  "projects.formInputs.difficulty.description": "Setting the difficulty will help mappers to find suitable projects to work on.",
   "projects.formInputs.per_task_instructions": "タスク単位での説明",
   "projects.formInputs.per_task_instructions.descriptions": "タスクを実行するにあたり、利用者にとって有益な情報を記入してください。\"{x}\" と \"{y}\" と \"{z}\" の値は、それぞれのタスクにおいて適切なパラメータに置換されます。\"{x}\" と \"{y}\" と \"{z}\" の値はTasking Managerで生成されたタスク上のみで有効となり、インポートされたタスク上では有効となりません。",
   "projects.formInputs.per_task_instructions.example": "例:このタスクでは追加のデータを読み込みます。[here](http://localhost:8111/import?new_layer=true&amp;url=http://www.domain.com/data/{x}/{y}/{z}/routes_2009.osm) をクリックして、データをJOSMに読み込んでください。",
   "projects.formInputs.changesetComment": "変更セットのコメント",
   "projects.formInputs.changesetComment.example": "例: #hotosm-project-470 #missingmaps 建物の追加",
   "projects.formInputs.changesetComment.description": "アップロードしたチェンジセットに表示されるデフォルトのコメントです。ユーザーは、マッピングした内容を説明するテキストを追加することが推奨されます。ハッシュタグは、後で分析するために使用されることがありますが、人間に有益である必要があり、過度に使用してはいけません。例：#group #event",
+  "projects.formInputs.non_editable_comment": "This default comment is not editable.",
   "project.formInputs.priority.options.urgent": "緊急",
   "project.formInputs.priority.options.high": "濃い",
   "project.formInputs.priority.options.medium": "中",
@@ -445,9 +561,9 @@
   "project.formInputs.placeholders.subject": "表題 *",
   "project.formInputs.placeholders.message": "メッセージ *",
   "project.formInputs.mapper_level.options.all": "すべてのレベル",
-  "project.formInputs.mapper_level.options.advanced": "詳細",
-  "project.formInputs.mapper_level.options.intermediate": "中級者",
-  "project.formInputs.mapper_level.options.beginner": "初心者",
+  "project.formInputs.mapper_level.options.challenging": "Challenging",
+  "project.formInputs.mapper_level.options.moderate": "Moderate",
+  "project.formInputs.mapper_level.options.easy": "Easy",
   "project.formInputs.teams.actions.filter.organisations": "組織によってチームを絞り込み",
   "project.formInputs.teams.actions.select": "チームを選択",
   "project.formInputs.teams.actions.select.role": "ロールの選択",
@@ -457,26 +573,40 @@
   "projects.formInputs.custom_editor.name": "名前",
   "projects.formInputs.custom_editor.description": "説明",
   "projects.formInputs.custom_editor.url": "URL",
-  "projects.formInputs.custom_editor.enabled.mapping": "",
-  "projects.formInputs.custom_editor.enabled.validation": "",
+  "projects.formInputs.custom_editor.enabled.mapping": "Enabled for mapping",
+  "projects.formInputs.custom_editor.enabled.validation": "Enabled for validation",
   "projects.formInputs.custom_editor.delete": "カスタムエディタを除去",
   "projects.formInputs.custom_editor.remove": "カスタムエディタを削除",
   "projects.formInputs.custom_editor.delete.confirm": "プロジェクトからカスタムエディタ設定を削除します。カスタムエディタの \"有効化\" チェックボックスを変更することで、削除を行うことなくエディタの利用可否を変更することが可能です。",
+  "projects.formInputs.noMappingEditor": "At least one editor must be enabled for mapping",
+  "projects.formInputs.noValidationEditor": "At least one editor must be enabled for validation",
+  "projects.formInputs.extraIdParams": "Additional iD URL parameters",
+  "projects.formInputs.extraIdParams.description": "Any additional URL parameters that you want include when loading iD editor (both the embedded and the external ones). Use & to separate different parameters. Example: {text}.",
+  "projects.formInputs.extraIdParams.description.link": "Check the {link} for more information.",
+  "projects.formInputs.extraIdParams.iDAPIDocs": "iD editor documentation",
   "project.mainSection.title": "汎用プロジェクト",
   "project.nav.mappingDifficulty": "難易度",
   "project.nav.moreFilters": "その他のフィルタ",
   "project.nav.campaign": "キャンペーン",
   "navFilters.startDate": "From",
-  "navFilters.startDate.placeholder": "",
-  "navFilters.endDate": "",
-  "navFilters.endDatePlace.placeholder": "",
+  "navFilters.startDate.placeholder": "Click to select a start date",
+  "navFilters.endDate": "To",
+  "navFilters.endDatePlace.placeholder": "Click to select an end date",
+  "navFilters.dateRange": "Date Range",
+  "navFilters.thisWeek": "This week",
+  "navFilters.thisMonth": "This month",
+  "navFilters.thisYear": "This year",
+  "navFilters.lastWeek": "Last week",
+  "navFilters.lastMonth": "Last month",
+  "navFilters.lastYear": "Last year",
+  "navFilters.customRange": "Custom range",
   "project.nav.showMapToggle": "地図を表示",
   "project.nav.listViewToggle": "リスト表示",
   "project.navFilters.typesOfMapping": "マッピング対象",
-  "project.navFilters.action.map": "",
-  "project.navFilters.action.validate": "",
-  "project.navFilters.action.any": "",
-  "project.navFilters.typesOfMapping.exactMatch": "",
+  "project.navFilters.action.map": "Projects to map",
+  "project.navFilters.action.validate": "Projects to validate",
+  "project.navFilters.action.any": "Any project",
+  "project.navFilters.typesOfMapping.exactMatch": "Exact match",
   "project.navFilters.campaigns": "すべてのキャンペーン",
   "project.navFilters.showAllXTags": "{typeOfTag} を表示",
   "project.inputs.placeholders.search": "プロジェクトを検索",
@@ -484,6 +614,9 @@
   "project.navFilters.organisations": "すべての組織",
   "project.navFilters.location": "ロケーション",
   "project.navFilters.locations": "地域",
+  "project.navFilters.interest": "Interest",
+  "project.navFilters.interests": "Interests",
+  "project.navFilters.filterByMyInterests": "Filter by my interests",
   "project.navFilters.error": " {yWord}中の {xWord} ロードに失敗",
   "project.nav.filters": "フィルタ",
   "project.nav.projects": "プロジェクト",
@@ -493,6 +626,7 @@
   "project.nav.contributed": "参加済み",
   "project.nav.allprojects": "全て",
   "project.nav.active": "有効",
+  "project.nav.stale": "Stale",
   "project.nav.managed": "自分で管理",
   "project.nav.created": "自分で作成",
   "project.nav.draft": "下書き",
@@ -503,17 +637,18 @@
   "project.sortby.id.descending": "新規プロジェクト",
   "project.sortby.id.ascending": "古いプロジェクト",
   "project.sortby.priority": "緊急プロジェクト",
-  "project.sortby.difficulty.beginner": "初心者向けプロジェクト",
-  "project.sortby.difficulty.advanced": "上級者向けプロジェクト",
+  "project.sortby.difficulty.easy": "Easy projects",
+  "project.sortby.difficulty.challenging": "Challenging projects",
   "project.sortby.more_active": "アクティブプロジェクト",
   "project.nav.apply": "適用",
   "project.nav.clear": "クリア",
   "project.results.retry": "再実行",
   "projects.stats.title": "時間の統計",
-  "projects.stats.average_mapping_time": "",
-  "projects.stats.average_validation_time": "",
-  "projects.stats.time_finish_mapping": "",
-  "projects.stats.time_finish_validation": "",
+  "project.stats.timeline.fetching.error": "An error occured while loading project stats",
+  "projects.stats.average_mapping_time": "Average mapping time per Task",
+  "projects.stats.average_validation_time": "Average validation time per Task",
+  "projects.stats.time_finish_mapping": "Estimated time to finish mapping",
+  "projects.stats.time_finish_validation": "Estimated time to finish validation",
   "project.stats.tasks.tatus": "ステータスによるタスク",
   "project.stats.tasks.needs_mapping": "マップするタスク",
   "project.stats.tasks.needs_validation": "検証するタスク",
@@ -531,12 +666,31 @@
   "project.stats.totalEdits": "マップ編集総計",
   "project.stats.changesets": "変更セット",
   "project.stats.edits": "編集",
+  "stats.ohsome.timestamp.generic": "These statistics come from ohsomeNow Stats and were last updated at {formattedDate} ({timeZone}). Missing fields will be made available soon!",
+  "stats.ohsome.timestamp.project": "These stats were retrieved using the default changeset comment of the project and were last updated at {formattedDate} ({timeZone}).",
   "project.tasks.unsaved_map_changes.title": "地図への変更が保存されていません",
   "project.tasks.unsaved_map_changes.split": "タスクを分割するには、変更を保存するか、変更の取り消しを行ってください",
   "project.tasks.unsaved_map_changes.unlock": "別のタスクを選択するには、変更の保存か取り消しを行ってください。",
+  "project.tasks.unsaved_map_changes.reload_editor": "Save or undo it to be able to switch editors",
+  "project.tasks.unsaved_map_changes.tooltip": "You have unsaved edits. Save or undo them to submit this task.",
   "project.tasks.unsaved_map_changes.actions.close_modal": "閉じる",
-  "project.tasks.no_mapped_tasks_selected": "",
-  "project.tasks.no_mapped_tasks_selected.description": "",
+  "project.tasks.validation.cannot_validate_mapped_tasks.deselect_and_validate": "Deselect and validate",
+  "project.tasks.select.cantValidateMappedTask": "This task was mapped by you",
+  "project.tasks.selection.map.priorityAreas.loading.error": "An error occured while loading the priority areas for the project",
+  "project.tasks.no_mapped_tasks_selected": "No mapped tasks selected",
+  "project.tasks.no_mapped_tasks_selected.description": "It was not possible to lock the selected tasks, as none of them are on the mapped status.",
+  "project.tasks.invalid_task_state_errortitle": "Invalid Task State",
+  "project.tasks.invalid_task_state_error.description": "Task in invalid state for mapping",
+  "project.tasks.user_not_allowed_error.title": "User Not Allowed Error",
+  "project.tasks.user_not_allowed_error.description": "Mapping not allowed because user not on allowed list",
+  "project.tasks.project_not_published_error.title": "Project Not Published",
+  "project.tasks.project_not_published_error.description": "Mapping not allowed because project not published",
+  "project.tasks.task_not_owned_error.title": "Task Not Owned",
+  "project.tasks.task_not_owned_error.description": "Attempting to unlock a task owned by another user",
+  "project.tasks.not_ready_for_validation_error.title": "Not Ready for Validation",
+  "project.tasks.not_ready_for_validation_error.description": "Task is not MAPPED, BADIMAGERY or INVALIDATED",
+  "project.tasks.cannot_validate_mapped_task_error.title": "Cannot Validate Mapped Task",
+  "project.tasks.cannot_validate_mapped_task_error.description": "Tasks cannot be validated by the same user who marked task as mapped or badimagery",
   "project.tasks.josm_error": "JOSMとの接続に失敗しました",
   "project.tasks.josm_error.description": "JOSMがコンピュータで実行されていて、リモート制御が有効になっているかどうかを確認してください。",
   "project.tasks.lock_error.generic": "このタスクをロックすることができませんでした。",
@@ -561,12 +715,24 @@
   "project.editor.reload_editor": "エディタを再読込",
   "project.editor.open_editor": "エディタで開く",
   "project.sidebar.show": "サイドバー表示",
+  "project.sidebar.lockTimeAboutToExpire.title": "Extend session for this task",
+  "project.sidebar.lockTimeAboutToExpire.description": "Your session of two hours is about to expire. Do you want to extend your time for this session to continue working on this task?",
+  "project.sidebar.extendTime": "Extend session",
+  "project.sidebar.sessionExtended": "Your session has been extended",
+  "project.sidebar.sessionExtensionError": "An error occurred while extending your session.",
+  "project.sidebar.sessionExpired.title": "Your session has expired",
+  "project.sidebar.sessionExpired.description": "Do you want to relock the tasks to extend the session so that you can update the status of the {count, plural, =1 {task} other{tasks}}?",
+  "project.sidebar.relockTask": "Relock {count, plural, =1 {task} other{tasks}}",
+  "project.sidebar.taskRelocked": "Your {count, plural, =1 {task has} other{tasks have}} been relocked.",
+  "project.sidebar.taskRelockError": "An error occurred while relocking your {count, plural, =1 {task} other{tasks}}.",
   "project.sidebar.hide": "サイドバー非表示",
-  "project.sidebar.timeToUnlock": "",
+  "project.sidebar.timeToUnlock": "Time available for you to complete work on this task",
   "project.task": "タスク",
   "project.tasks": "タスク",
   "project.taskId": "タスク #{id}",
   "project.instructions": "マッピング方法解説",
+  "project.isArchived": "This project is archived and read-only. You can view the project, but you cannot update tasks.",
+  "project.enforcedRandomTaskSelection": "This project has enforced random task selection for mapping. When you click the 'Map a task' button, a random task will be presented for mapping.",
   "project.changesetComment": "変更セットのコメント",
   "project.contributions": "協力",
   "project.contributions.registered": "登録日",
@@ -576,7 +742,7 @@
   "project.imagery.wmts": "カスタム WMTS レイヤー",
   "project.imagery.customLayer": "カスタムレイヤー",
   "project.imagery.noDefined": "利用可能なソース",
-  "project.imagery.copy": "",
+  "project.imagery.copy": "Copy imagery URL",
   "project.selectTask.footer.button.mapRandomTask": "タスクのマッピング",
   "project.selectTask.footer.button.mapSelectedTask": "選択したタスクをマッピング",
   "project.selectTask.footer.button.mapAnotherTask": "他のタスクをマッピング",
@@ -602,29 +768,30 @@
   "project.tasks.status.badImagery": "無効",
   "project.tasks.status.split": "分割",
   "project.tasks.sorting.id": "タスク番号で並べ替え",
-  "project.tasks.sorting.date": "",
-  "project.tasks.sorting.date.reverse": "",
+  "project.tasks.sorting.date": "Most recently updated",
+  "project.tasks.sorting.date.reverse": "Least recently updated",
   "project.tasks.filter.all": "全て",
   "project.tasks.filter.readyToValidate": "検証準備完了",
   "project.tasks.filter.readyToMap": "マッピング可能",
   "project.tasks.filter.noTasksFound": "タスクが見つかりませんでした。",
-  "project.tasks.readComments": "",
+  "project.tasks.readComments": "Please check the history tab for relevant comments.",
   "project.tasks.action.completion": "完了",
   "project.tasks.action.history": "履歴",
   "project.tasks.history.comments": "コメント",
-  "project.tasks.history.activities": "",
+  "project.tasks.history.activities": "Activities",
   "project.tasks.history.all": "全て",
-  "project.tasks.action.comments.copy": "",
-  "project.tasks.action.comments.copy_to_all": "",
-  "project.tasks.action.comments.copy_to_invalidated": "",
-  "project.tasks.action.comments.copy_to_validated": "",
-  "project.tasks.action.resources": "",
+  "project.tasks.action.comments.copy": "Copy comment",
+  "project.tasks.action.comments.copy_to_all": "To all tasks",
+  "project.tasks.action.comments.copy_to_invalidated": "To tasks marked as \"No\"",
+  "project.tasks.action.comments.copy_to_validated": "To tasks marked as \"Yes\"",
+  "project.tasks.action.resources": "Resources",
   "project.tasks.action.finish_mapping.title": "マッピングが完了したら、",
   "project.tasks.action.instructions.select_task": "編集のステータスに一致するオプションを 1 つ選択します。",
   "project.input.placeholder.write_comment": "コメントを書く",
   "project.tasks.action.instructions.leave_comment": "コメントを残す (オプション)",
   "project.tasks.action.instructions.submit_task": "作業を完了する",
   "project.tasks.action.comment.title": "コメント",
+  "project.tasks.action.redirectToPreviousProject": "Redirect to previous project #{projectId}",
   "project.tasks.action.comment.input.placeholder": "このタスクにコメントを書く",
   "project.tasks.action.selection.title": "タスクの状態",
   "project.tasks.action.invalidate": "再検証を依頼",
@@ -635,18 +802,22 @@
   "project.tasks.action.confirmation.yes": "はい",
   "project.tasks.action.confirmation.no": "いいえ",
   "project.tasks.action.options.mapped_question": "このタスクは完璧にマップされていますか？",
-  "project.tasks.action.options.validated_question": "{number, plural, other {}}",
+  "project.tasks.action.options.validated_question": "{number, plural, one {Is this task well mapped?} other {Are these tasks well mapped?}}",
   "project.tasks.action.options.complete": "はい",
   "project.tasks.action.options.incomplete": "いいえ",
   "project.tasks.action.options.bad_imagery": "低品質の画像",
   "project.tasks.action.split_task": "タスクの分割",
-  "project.tasks.action.split_task.error": "",
-  "project.tasks.action.split_task.error.description": "",
+  "project.tasks.action.split_task.error": "It was not possible to split the task",
+  "project.tasks.action.split_task.error.description": "This task is already too small and can not be split.",
+  "project.tasks.action.split_task.error.generic": "An error occured while splitting the task.",
   "project.tasks.action.select_another_task": "他のタスクを選択",
+  "project.tasks.action.stop_mapping.error": "An error occured while stopping mapping.",
   "project.tasks.action.stop_validation": "検証を中断",
+  "project.tasks.action.stop_validation.error": "An error occured while stopping validation.",
   "project.tasks.action.tasks_map": "タスクマッピング済",
   "project.tasks.action.submit_task": "タスクを投稿",
   "project.tasks.action.submit_tasks": "タスクを投稿",
+  "project.tasks.action.submit_task.error": "An error occured while submitting your {numTasks, plural, =1 {task} other {tasks}}.",
   "project.tasks.history.title": "タスク {n}",
   "project.tasks.history.unavailable": "タスク実施不可",
   "project.tasks.history.split.description": "タスク{id}が分割され、その履歴が利用できなくなりました",
@@ -654,17 +825,22 @@
   "project.tasks.activity.project_id": "プロジェクト #{id}",
   "project.tasks.activity.overpass.download": "Overpassダウンロード",
   "project.tasks.activity.overpass.visualization": "Overpassで可視化",
-  "project.resources.data": "",
+  "project.resources.data": "Project's data",
   "project.resources.changesets": "変更セット",
-  "project.resources.changesets.select_task": "",
-  "project.resources.changesets.entire_project": "",
-  "project.resources.changesets.task": "",
+  "project.resources.changesets.select_task": "Select task",
+  "project.resources.changesets.entire_project": "Entire project",
+  "project.resources.changesets.task": "See task's changesets",
   "project.tasks.activity.osmcha": "OSMChaで変更セットを表示",
   "project.tasks.history.comment": "コメント済",
+  "project.tasks.history.taskDetailFetchError": "An error occured while fetching the task details.",
+  "project.tasks.history.noCommentsYet": "No comments have been made on the task yet.",
+  "project.tasks.history.nothingToDisplay": "No comments/activities have been made on this task yet.",
   "project.tasks.history.lockedmapping": "マッピング実施中",
   "project.tasks.history.lockedvalidation": "検証作業実施中",
   "project.tasks.history.autounlockedmapping": "マッピングのために自動的にロックを解除",
   "project.tasks.history.autounlockedvalidation": "検証のために自動的にロックを解除",
+  "project.tasks.history.extendedForMapping": "extended the lock session for mapping",
+  "project.tasks.history.extendedForValidation": "extended the lock session for validation",
   "project.tasks.history.badimagery": "使用不可としてマーク",
   "project.tasks.history.mapped": "マッピング完了としてマーク",
   "project.tasks.history.validated": "検証済みとしてマーク",
@@ -696,23 +872,40 @@
   "management.messages.notAllowed": "組織を管理することはできません。",
   "management.messages.imageUpload.error": "画像のアップロードに失敗しました。",
   "management.fields.managers": "管理者",
-  "management.fields.managers.empty": "",
+  "management.fields.managers.remove": "Remove",
+  "management.fields.managers.add": "Add",
+  "management.fields.managers.link": "Link",
+  "management.fields.managers.empty": "There are no managers yet.",
   "management.link.manage": "{entity} 管理",
   "management.link.edit.team": "チームの編集",
+  "management.partners.menu": "Partners",
+  "management.edit.resourcesButton": "Resources link",
   "management.members.edit": "編集",
+  "management.members.alreadyInTeam": "Already in team",
+  "management.members.search.noOptions": "No options",
+  "management.members.UserAlreadyInListError": "User is already a member of this team or has already requested to join.",
   "management.members": "メンバー",
-  "management.members.empty": "",
+  "management.members.empty": "There are no members yet.",
   "management.teams.mapping": "マッピングチーム",
   "management.teams.validation": "検証チーム",
   "management.teams.members": "チームメンバ",
   "management.teams.members.send_message": "チームメッセージ",
+  "management.teams.members.send_message.success": "Message sent",
+  "management.teams.members.send_message.failure": "Failed to send message. Please try again.",
   "management.teams.members.send_message.button": "送信",
   "management.teams.members.send_message.subject": "主題",
   "management.teams.join_requests": "参加リクエスト",
-  "management.teams.join_requests.empty": "",
+  "management.teams.join_requests.empty": "There aren't any requests to join the team.",
   "management.teams": "チーム",
   "management.team": "チーム",
+  "user.team.leaveTeam": "Leave the team",
+  "user.team.leaveTeam.description": "Are you sure you want to leave <b>{name}</b>?",
+  "user.team.leaveTeam.button.leave": "Leave",
   "management.projects": "プロジェクト",
+  "management.projects.stale": "Stale",
+  "management.projects.created_this_year": "Created this year",
+  "management.projects.created.total": "{number, plural, one {# project created} other {# projects created}}",
+  "management.projects.stats": "{number, plural, one {# project} other {# projects}}",
   "management.campaigns": "キャンペーン",
   "management.campaign": "キャンペーン",
   "management.categories": "カテゴリ",
@@ -723,51 +916,64 @@
   "management.titles.category_information": "カテゴリ情報",
   "management.edit_members": "最初に保存した後でもさらにユーザーを追加することができます。",
   "management.filter.buttons.myOrganisations": "自分の組織",
+  "management.filter.textarea.searchOrganisations": "Search organisations...",
+  "management.filter.stats.buildingsStats": "Building Edits",
+  "management.contributors": "Contributors",
+  "management.filter.stats.roadsStats": "km of Roads",
+  "management.filter.stats.editsStats": "Total Edits",
+  "management.filter.stats.communityStats": "Community stats",
+  "management.filter.stats.mappersStats": "Contributors",
+  "management.filter.textarea.searchTeams": "Search teams...",
+  "management.filter.textarea.searchCampaigns": "Search campaigns...",
+  "management.filter.textarea.searchCategories": "Search categories...",
+  "management.filter.textarea.searchLicenses": "Search licenses...",
   "management.filter.buttons.all": "全て",
   "management.myTeams": "自分のチーム",
-  "management.buttons.new": "",
+  "teams.loading.error": "An error occured while loading teams.",
+  "management.buttons.new": "New",
   "management.buttons.delete": "削除",
   "management.buttons.accept": "承諾",
   "management.buttons.reject": "却下",
   "management.links.viewAll": "すべてを表示",
   "management.organisation": "組織",
   "management.organisations": "組織",
-  "management.organisations.type": "",
-  "management.organisations.publicUrl": "",
-  "management.organisations.publicUrl.copy": "",
-  "management.organisations.tier.select": "",
-  "management.organisations.type.select": "",
-  "management.organisations.type.free": "",
-  "management.organisations.type.discounted": "",
-  "management.organisations.type.defaultFee": "",
-  "management.organisations.list.empty": "",
-  "management.organisations.stats.retry": "",
-  "management.organisations.stats.error": "",
-  "management.organisations.stats.error.start_date": "",
-  "management.organisations.stats.error.date_range": "",
-  "management.organisations.stats.to_be_mapped": "",
-  "management.organisations.stats.tasks_mapped": "",
+  "management.organisations.type": "Type",
+  "management.organisations.publicUrl": "Public URL",
+  "management.organisations.publicUrl.copy": "Copy public URL",
+  "management.organisations.tier.select": "Select tier",
+  "management.organisations.type.select": "Select type",
+  "management.organisations.field.required": "Required field",
+  "management.organisations.type.free": "Free",
+  "management.organisations.type.discounted": "Discounted",
+  "management.organisations.type.defaultFee": "Default fee",
+  "management.organisations.list.empty": "No organizations were found.",
+  "management.organisations.stats.retry": "Try again",
+  "management.organisations.stats.error": "An error occurred while loading stats.",
+  "management.organisations.stats.error.start_date": "Start date should not be later than end date.",
+  "management.organisations.stats.error.date_range": "Date range is longer than one year.",
+  "management.organisations.stats.to_be_mapped": "Tasks to be mapped",
+  "management.organisations.stats.tasks_mapped": "Tasks mapped",
   "management.organisations.stats.ready_for_validation": "検証準備完了",
-  "management.organisations.stats.tasks_validated": "",
-  "management.organisations.stats.actions_needed": "",
-  "management.organisations.stats.completed_actions": "",
-  "management.organisations.stats.actions_needed.help": "",
-  "management.organisations.stats.tier.subscribed": "",
-  "management.organisations.stats.level.tooltip": "",
-  "management.organisations.stats.tier.tooltip": "",
-  "management.organisations.stats.level.description": "",
-  "management.organisations.stats.level.estimation": "",
-  "management.organisations.stats.tier.estimation": "",
-  "management.organisations.stats.cost.estimation": "",
-  "management.organisations.stats.next_level.actions": "",
-  "management.organisations.stats.tier.actions_remaining": "",
-  "management.organisations.tier.free": "",
+  "management.organisations.stats.tasks_validated": "Tasks validated",
+  "management.organisations.stats.actions_needed": "Actions needed",
+  "management.organisations.stats.completed_actions": "Completed actions",
+  "management.organisations.stats.actions_needed.help": "Action means a mapping or validation operation. As each task needs to be mapped and validated, this is the number of actions needed to finish all the published projects of that organization.",
+  "management.organisations.stats.tier.subscribed": "Subscribed tier",
+  "management.organisations.stats.level.tooltip": "{n} of {total} ({percent}%) completed to move to level {nextLevel}",
+  "management.organisations.stats.tier.tooltip": "{n} of {total} ({percent}%) completed to move to the {nextTier} tier",
+  "management.organisations.stats.level.description": "{org} is an organization level {level}.",
+  "management.organisations.stats.level.estimation": "Estimated level by the end of {year}",
+  "management.organisations.stats.tier.estimation": "Estimated tier by the end of {year}",
+  "management.organisations.stats.cost.estimation": "Estimated cost by the end of {year}",
+  "management.organisations.stats.next_level.actions": "Actions to reach the level {n}",
+  "management.organisations.stats.tier.actions_remaining": "Actions remaining on the {name} tier",
+  "management.organisations.tier.free": "Free",
   "management.organisations.tier.low": "薄い",
   "management.organisations.tier.medium": "中",
   "management.organisations.tier.high": "濃い",
-  "management.organisations.tier.very_high": "",
-  "management.organisations.stats.level.next": "",
-  "management.organisations.stats.level.top": "",
+  "management.organisations.tier.very_high": "Very High",
+  "management.organisations.stats.level.next": "After completing more {n} actions, it will reach the level {nextLevel}.",
+  "management.organisations.stats.level.top": "It is the highest level an organization can be on Tasking Manager!",
   "management.titles.organisation_information": "組織の情報",
   "management.titles.team_information": "チームの情報",
   "management.titles.campaign_information": "キャンペーン情報",
@@ -775,12 +981,13 @@
   "management.fields.name": "名前",
   "management.fields.plain_text": "プレーンテキスト",
   "management.fields.description": "説明",
-  "management.fields.invite_only": "招待のみ",
+  "management.fields.join_method": "Join method",
   "management.fields.visibility": "可視性",
   "management.fields.organisation.image": "画像",
   "management.fields.website": "ウェブサイト",
   "management.settings": "設定",
   "management.placeholder.search_users": "Tasking Managerユーザ名で検索",
+  "management.placeholder.search_members": "Search team members...",
   "management.button.save": "保存",
   "management.button.done": "完了",
   "management.button.cancel": "キャンセル",
@@ -789,17 +996,27 @@
   "management.teams.no_campaigns": "キャンペーンはまだありません。",
   "management.no_categories": "カテゴリはまだありません。",
   "management.no_licenses": "ライセンス情報が設定されていません。",
+  "management.teams.join_method.any": "Anyone can join",
+  "management.teams.join_method.any.description": "This team is open to everyone.",
+  "management.teams.join_method.byRequest": "By request",
+  "management.teams.join_method.by_request.description": "To join this team, users must send a join request, which must be approved by team managers.",
+  "management.teams.join_method.byInvite": "By invite",
+  "management.teams.join_method.by_invite.description": "Users can only join this team if managers invite them.",
   "management.teams.visibility.public": "公開",
+  "management.teams.visibility.public.description": "This team will be displayed on the team members profiles.",
   "management.teams.visibility.private": "プライベート",
-  "management.teams.invite_only.description": "メンバーの新規参加には管理者の承認が必要です。",
+  "management.teams.visibility.private.description": "This team will not be displayed on the team members profiles.",
+  "management.teams.newJoinRequestNotification": "Enable for team managers to receive (email) notifications each time a new join request is made",
   "teamsAndOrgs.management.teams.messages.waiting_approval": "このチームへの参加リクエストは承認待ちです。",
   "management.projects.no_found": "この {entity} にはまだプロジェクトがありません。",
   "management.organisation.teams.no_found": "チームが見つかりません。",
-  "management.stats.new_users.month": "{number, plural, other {}}",
-  "management.stats.new_users.week": "{number, plural, other {}}",
-  "management.stats.new_users.active": "",
-  "management.stats.new_users.email_verified": "",
+  "management.stats.new_users.month": "{number, plural, one {# user registered in the last 30 days} other {# users registered in the last 30 days}}",
+  "management.stats.new_users.week": "{number, plural, one {# user registered in the last 7 days} other {# users registered in the last 7 days}}",
+  "management.stats.new_users.active": "Mapped at least one task",
+  "management.stats.new_users.email_verified": "Confirmed email address",
   "management.stats.title": "統計",
+  "management.stats.overview": "Overview",
+  "management.stats.features": "Total features",
   "user.nextLevel": "{changesets} /  {level} まで {nextLevelThreshold} 変更セット",
   "user.personalInfo": "個人情報",
   "user.name": "名前",
@@ -812,9 +1029,10 @@
   "user.gender.male": "男性",
   "user.gender.preferNotToSay": "言明したくない",
   "user.gender.selfDescribe": "自分で記述: ",
-  "user.gender.privacy": "",
-  "user.email.privacy": "",
+  "user.gender.privacy": "Your gender information will be used only for statistics purposes and will not be exposed to other users.",
+  "user.email.privacy": "Your email address will be used only to send you notifications and updates about Tasking Manager. It will not be shared with other users or organizations.",
   "user.slack": "{org} Slack上のユーザー名",
+  "user.osmCha": "Changesets on OSMCha",
   "user.personalInfo.error": "URLではなく、ユーザー名だけを入力してください。",
   "user.form.save": "保存",
   "user.settings.title": "設定",
@@ -837,8 +1055,10 @@
   "user.settings.required": "必須項目",
   "user.notifications.projects.description": "あなたが参加したプロジェクトが進行すると通知を受け取ります。",
   "user.notifications.task.description": "あなたが貢献したタスクが検証されたら、Emailを受信します。",
-  "user.notifications.comments": "コメント",
-  "user.notifications.comments.description": "あなたが貢献したプロジェクトやタスクに誰かがコメントを投稿するたびに通知を受け取ります。",
+  "user.notifications.questionsAndComments": "Questions and comments",
+  "user.notifications.questionsAndComments.description": "Receive a notification every time someone posts in the 'Questions and comments' section of the projects you have contributed to or created.",
+  "user.notifications.taskComments": "Task comments",
+  "user.notifications.taskComments.description": "Receive a notification every time someone posts a comment on the tasks you have contributed to.",
   "user.settings.become_validator.button": "解説",
   "user.welcome.title": "Tasking Managerにようこそ！",
   "user.interests.update.success": "関心分野が正常に更新されました。",
@@ -877,6 +1097,8 @@
   "users.list.total": "ユーザ総数: {total}",
   "users.list.actions.setRole": "ロール登録",
   "users.list.actions.setLevel": "マッパーレベル登録",
+  "users.list.attribute.updation.success": "User {attribute, select, role {role} mapperLevel {mapper level} other {attribute}} updated",
+  "users.list.attribute.updation.failure": "Failed to update user {attribute, select, role {role} mapperLevel {mapper level} other {attribute}}. Please try again.",
   "user.mapper_level.options.all": "すべてのレベル",
   "user.mapper_level.options.advanced": "詳細",
   "user.mapper_level.options.intermediate": "中級者",
@@ -894,7 +1116,7 @@
   "users.detail.buildingsMapped": "マッピングした建物数",
   "users.detail.roadMapped": "マッピングした道路",
   "users.detail.poiMapped": "マッピングされた地物数",
-  "users.detail.waterwaysMapped": "",
+  "users.detail.waterwaysMapped": "Km waterways mapped",
   "users.detail.tasksMapped": "マッピングした{user}",
   "users.detail.you": "自分",
   "users.detail.tasksValidated": "検証した{user}",
@@ -904,7 +1126,7 @@
   "users.detail.topProjectsMappedTitle": "参加プロジェクトの上位 5 件",
   "users.detail.topProjectsMapped.error": "これまでマッピングされたプロジェクトはありません。",
   "users.detail.topCausesTitle": "参加理由トップ",
-  "users.detail.others": "",
+  "users.detail.others": "Others",
   "users.detail.projects.noData": "これまでマッピングされたプロジェクトがないため、情報がありません。",
   "users.detail.editsTitle": "番号で編集",
   "users.detail.edits.error": "表示するデータがありません。OpenStreetMap編集の状態は1時間遅れで更新されます。",
@@ -915,8 +1137,8 @@
   "users.detail.heatmapContributions": "協力",
   "users.detail.heatmapLegendMore": "おおい",
   "users.detail.heatmapLegendLess": "少ない",
-  "users.detail.delay_popup": "統計の処理は負荷が高いため、数値の変化の反映には1時間ほどかかります。",
   "users.detail.teams": "チーム",
+  "users.header.organisations.error": "Couldn't load organisations at this time",
   "error.page.title": "エラーが発生しました",
   "error.page.description": "何かがうまく機能しませんでした.",
   "error.page.link": "戻る",
@@ -924,22 +1146,40 @@
   "notFound.project.title": "プロジェクト {id} が見つかりません",
   "notFound.lead": "URL を確認するか、このエラーを報告してください。",
   "project.stats.timeline": "プロジェクトのタイムライン",
+  "project.stats.contributions.timeline.fetching.error": "An error occured while loading contributions data",
+  "project.detail.stats.timeline.fetching.error": "An error occured while loading edits stats",
+  "project.detail.stats.tasks.error": "An error occured while loading tasks stats",
+  "project.detail.stats.contributions.error": "An error occured while loading contributions stats",
   "management.forbiddenAccess.title": "管理エリアへのアクセスはできません。",
   "teamsAndOrgs.management.project.forbidden": "プロジェクトへの参加権限がありません。",
   "teamsAndOrgs.management.team.forbidden": "あなたはこのチームを編集することが許可されていません",
-  "loginPage.title": "",
-  "loginPage.text.login": "",
-  "loginPage.text.create_account": "",
+  "loginPage.title": "Sign in to {org} Tasking Manager",
+  "loginPage.text.login": "You can log in with an OpenStreetMap account.",
+  "loginPage.text.create_account": "Or create a new one to start mapping.",
   "management.managers": "管理者",
   "management.users.title": "ユーザーの管理",
   "management.stats.users.title": "新規ユーザ",
-  "management.stats.features": "",
+  "management.partner.creation": "Create new partner",
   "teamsAndOrgs.management.organisation.creation": "組織を新規作成",
-  "teamsAndOrgs.management.organisation.edit": "",
+  "teamsAndOrgs.management.organisation.orgCreationNameExistsError": "Organisation name already exists",
+  "teamsAndOrgs.management.organisation.edit": "Edit organization",
   "teamsAndOrgs.management.team.creation": "チームを新規作成",
   "teamsAndOrgs.management.campaign.creation": "キャンペーンを新規作成",
   "teamsAndOrgs.management.organisation.button.create": "組織の作成",
+  "management.partner.button.create": "Create Partner",
+  "management.partner.creation.error": "Partner name already exists",
+  "management.partner.edit.error": "Partner name already exists",
+  "management.partner.learnToMap": "Learn to Map",
+  "management.partner.currentProjects": "Current Projects",
+  "management.partner.activity": "Activity",
+  "management.partner.resources": "Resources",
+  "management.entity.creation.success": "{entity, select, organization {Organization} partner {Partner} license {License} project {Project} category {Category} campaign {Campaign} team {Team} other {}} created successfully",
+  "management.entity.creation.failure": "Failed to create {entity, select, organization {organization} license {license} project {project} category {category} campaign {campaign} team {team} other {}}. Please try again.",
+  "management.entity.updation.success": "{entity, select, organization {Organization} license {License} project {Project} category {Category} campaign {Campaign} team {Team} other {}} information updated",
+  "management.entity.updation.failure": "Failed to update {entity, select, organization {organization} license {license} project {project} category {category} campaign {campaign} team {team} other {}} information. Please try again",
   "teamsAndOrgs.management.team.button.create": "チームの作成",
+  "management.team.affiliationUpdationSuccess": "{affiliation, select, managers {Managers} other {Members}} updated",
+  "management.team.affiliationUpdationFailure": "Failed to updated {affiliation, select, managers {Managers} other {Members}}. Please try again",
   "teamsAndOrgs.management.campaign.button.create": "キャンペーンの作成",
   "teamsAndOrgs.management.button.my_teams": "自分のチーム",
   "teamsAndOrgs.management.button.join_team": "チームに参加",
@@ -947,12 +1187,16 @@
   "teamsAndOrgs.management.button.leave_team": "チームから離脱",
   "teamsAndOrgs.management.button.cancel": "キャンセル",
   "teamsAndOrgs.management.organisation.manage.error": "You are not a manager of this organization, so you are not allowed to edit it.",
-  "teamsAndOrgs.management.organisation.stats": "",
+  "teamsAndOrgs.management.partner.manage.error": "You are not a manager of this partner, so you are not allowed to edit it.",
+  "teamsAndOrgs.management.partner.create.error": "You are not allowed to access the management area.",
+  "teamsAndOrgs.management.organisation.stats": "Tasks statistics",
   "teamsAndOrgs.management.organisation.activity.stats": "統計",
-  "teamsAndOrgs.management.organisation.remaining_tasks": "",
-  "teamsAndOrgs.management.organisation.usage_tier": "",
+  "teamsAndOrgs.management.organisation.remaining_tasks": "Total remaining",
+  "teamsAndOrgs.management.organisation.project_stats": "Projects Statistics",
+  "teamsAndOrgs.management.organisation.usage_tier": "Tier",
   "teamsAndOrgs.management.organisation.usage_level": "レベル",
   "teamsAndOrgs.management.organisation.manage": "組織の管理",
+  "management.partner.manage": "Manage partner",
   "teamsAndOrgs.management.team.manage": "チームの管理",
   "teamsAndOrgs.management.campaign.manage": "キャンペーンの管理",
   "teamsAndOrgs.management.titles.team_information": "チームの情報",
@@ -967,6 +1211,7 @@
   "management.category.button.create": "カテゴリの作成",
   "taskAction.messages.error.no_locked_tasks.text": "ロックされたタスクはありません。 #{currentProject} プロジェクトにアクセスして、マッピングするタスクを選択します。",
   "taskAction.go_to_project.button": "#{project} のプロジェクトに移動",
+  "taskAction.locked_tasks.fetching.error": "An error occurred when loading your tasks.",
   "EmailVerification.link.profileSettings": "プロフィール設定",
   "EmailVerification.status.verified": "メールの確認ができました。",
   "EmailVerification.status.error": "検証に失敗しました。",
@@ -974,7 +1219,7 @@
   "EmailVerification.status.verified.explanation": "メールアドレスを登録いただきありがとうございます。",
   "EmailVerification.status.verified.explanation.extraLine": "今後、Tasking Managerであなたが行った編集作業の状況が随時報告されます。 {link} から通知設定を変更することが可能です。",
   "pages.about.title": "バージョン情報",
-  "pages.about.intro": "",
+  "pages.about.intro": "Every day, a global community of mappers chips away at this large project. They contribute to the online Open Data map of world history. Universal access to geospatial information is heavily changing how people use maps and what they build with them.",
   "pages.learn.title": "解説",
   "pages.learn.pages": "学習ページ",
   "pages.learn.map.title": "地図について",
@@ -988,6 +1233,8 @@
   "pages.learn.tutorials.tm_manual.description": "プロジェクトやタスクの見つけ方や、編集作業のためにタスクをロックする方法、適切な編集ソフトを選択する方法について解説されています。",
   "pages.learn.tutorials.osm_step_by_step.title": "OpenStreetMapステップバイステップ",
   "pages.learn.tutorials.osm_step_by_step.description": "OpenStreetMap初心者ガイド",
+  "pages.learn.tutorials.cheatsheet.title": "Tasking Manager Cheatsheet",
+  "pages.learn.tutorials.cheatsheet.description": "TM's concise set of notes used for quick reference",
   "pages.learn.tutorials.learnosm.title": "管理者ガイド",
   "pages.learn.tutorials.learnosm.description": "Tasking Managerでのプロジェクト作成や管理に関するマニュアル",
   "pages.learn.map.steps.project.title": "プロジェクトを選択",
@@ -1012,18 +1259,20 @@
   "pages.learn.validate.steps.identify.title": "確認作業への参加",
   "pages.learn.validate.steps.identify.description": "検証作業には忍耐力と細部への心配りが要求されます。また、OpenStreetMapでのマッピング作業に習熟している必要がありますが、エキスパートとして極めている必要まではありません。",
   "pages.learn.validate.steps.build.title": "スキルを磨く",
-  "pages.learn.validate.steps.build.description": "",
+  "pages.learn.validate.steps.build.description": "Becoming a skilled mapper is crucial to becoming a validator. Build up your experience in mapping in OpenHistoricalMap all kinds of map elements. Make sure you are familiar with the {taggingLink}.Eventually check out the JOSM Editor, a customizable editor for OpenHistoricalMap with a number of tools and plugins to make mapping and validation easier!",
   "pages.learn.validate.steps.collaborate.title": "コミュニティの一部としてのコラボレーション",
   "pages.learn.validate.steps.collaborate.description": "検証作業における具体的な手法は作業者ごとに異なります。 {mailingListLink} や {forumLink} での会話に参加してみましょう。あなたが見つけた情報を共有するなど、ぜひコミュニティに加わってみてください。",
-  "pages.learn.validate.mailing_lists": "",
-  "pages.learn.validate.forum": "",
-  "pages.learn.validate.tagging_schema": "",
+  "pages.learn.validate.mailing_lists": "mailing lists",
+  "pages.learn.validate.forum": "forum",
+  "pages.learn.validate.tagging_schema": "OpenStreetMap tagging schema",
   "pages.learn.validate.note": "OpenStreetMapでコミュニティマッパーとしてスキルを磨いたら、検証作業を行う準備が整ってきたことになります。既に存在している検証作業チームに申請するか、あるいはあなたが検証作業を行いたいプロジェクトを決めてください。チームに加わることで、タスクの作業検証を行うことができるようになります。これはペイ・フォワードの機会を得ることでもあり、あなたに続く新しいマッパーたちの手を取り、導く活動でもあります。",
   "pages.learn.manage_title": "管理方法について",
   "pages.learn.manage.intro": "素早く協力してデータ収集を行うには、マッピング活動をオーガナイズすることが非常に重要となります。作業を成功させるためには、マッパーたちによるコミュニティのモチベーションを高めなくてはなりません。",
   "pages.learn.manage.description": "Tasking Managerにあなた自身がプロジェクトを立ち上げることも可能です。ただ、プロジェクトの立ち上げにはそれに伴う責任が発生しますので、自身のスキルレベルがそれに見合うものであるかどうか、留意するようにしてください。立ち上げの際には、Tasking Managerの管理者に連絡をとり、プロジェクトの作成と管理の権限についてより詳しい情報を得てください。",
   "pages.learn.manage.steps.join.title": "コミュニティや組織への参加",
   "pages.learn.manage.steps.join.description": "Tasking Managerには、コミュニティや組織の一員としてプロジェクトを立ち上げる機能があります。知己のコミュニティや組織に声をかけるか、あるいはTasking Managerにあなたのグループを追加するよう管理者にリクエストしてみてください。",
+  "pages.learn.manage.list": "list",
+  "pages.learn.manage.form": "form",
   "pages.learn.manage.steps.create.title": "プロジェクトの作成と宣言",
   "pages.learn.manage.steps.create.description": "プロジェクトを作成したら、たくさんの人に参加してもらい、マッピングを進めましょう。作成したプロジェクトの状況確認を定期的に行ってください。マッピングが正しく行われ、完了に向けて進んでいるか確認しましょう。",
   "pages.learn.manage.steps.data.title": "データを利用する",
@@ -1052,8 +1301,8 @@
   "pages.about.description2": "この方法を利用することで、多くの個人マッパーに対してタスクを割り当てることができます。また、プロジェクトの進捗状況を監視し、マッピングの完成度 (例: マッピングするべき要素の完成率、特定タグの利用など) を高めることもできるようになります。",
   "pages.about.OpenStreetMap.description": "すべての作業は {osmLink} を通じて行われます。OpenStreetMapはコミュニティによって運営される自由で編集可能な世界地図であり、非営利組織OpenStreetMap Foundationによって支援されています。",
   "pages.about.OpenStreetMap.wiki": "より詳しい情報を知るためには、 {osmWikiLink} を参照したり、地域のOSMコミュニティに参加したりしてみてください。",
-  "pages.about.sustainabilityModel": "",
-  "pages.about.sustainabilityModel.faq": "",
+  "pages.about.sustainabilityModel": "Access the {faqs} for services and support information.",
+  "pages.about.sustainabilityModel.faq": "Tasking Manager Sustainability Model FAQs",
   "pages.about.floss.title": "Free and Open Source Software",
   "pages.about.floss.description": "Tasking Managerはフリーかつオープンソースのソフトウェアであり、 {hotLink} によって開発されています。アプリケーションのソースコードは {code} で公開されており、課題の報告や活動の参加はそちらから行うことができます。",
   "pages.edit_project.title": "プロジェクト編集",
@@ -1063,10 +1312,11 @@
   "pages.edit_project.buttons.task_selection_page": "タスク選択ページ",
   "pages.edit_project.buttons.project_stats": "プロジェクト統計",
   "pages.edit_project.actions.update.success": "プロジェクトが正常に更新されました。",
-  "pages.edit_project.actions.update.data_error": "",
+  "pages.edit_project.actions.update.data_error": "It was not possible to save the project.",
   "pages.edit_project.actions.update.error": "サーバエラーのため、プロジェクトの保存に失敗しました。時間をおいてもう一度試していただくか、問題が継続するようであれば管理者までご連絡ください。",
-  "pages.edit_project.actions.missing_fields": "{number, plural, other {}}",
-  "pages.edit_project.actions.missing_fields_for_locale": "",
+  "pages.edit_project.actions.missing_fields": "{number, plural, one {One required field is missing:} other {Some required fields are missing:}}",
+  "pages.edit_project.actions.missing_fields_for_locale": "Missing information in the project's default language ({locale}):",
+  "pages.edit_project.actions.missing_fields_for_teams": "{mapping, select, true {Mapping} other {{validation, select, true {Validation} other {}}}} {mapping, select, true {{validation, select, true {and validation} other {}}} other {}} permissions have been set only to team members but no team has been added.",
   "pages.edit_project.sections.description": "説明",
   "pages.edit_project.sections.instructions": "マッピング方法解説",
   "pages.edit_project.sections.metadata": "メタデータ",
@@ -1077,5 +1327,5 @@
   "pages.edit_project.sections.actions": "アクション",
   "pages.edit_project.sections.custom_editor": "カスタムエディタ",
   "pages.create_campaign.duplicate": "この名前の項目はすでに存在します",
-  "pages.create_campaign.error": ""
+  "pages.create_campaign.error": "There was an error saving this campaign."
 }