indicate sponsored time slots on time slot index (#297)

Author: codyjamesbrooks

app/decorators/staff/time_slot_decorator.rb

@@ -20,7 +20,7 @@ def time_slot_id
 
  def row_data_time_sortable(buttons: false)
    row = [object.conference_day, object.start_time, object.end_time, linked_title,
-     display_presenter, object.room_name, display_track_name]
+     display_presenter, object.room_name, display_sponsor_star, display_track_name]
      row << action_links if buttons
      row
  end
@@ -142,6 +142,10 @@ def sponsored?
     object.sponsor.present?
   end
 
+  def display_sponsor_star
+    h.content_tag(:span, "", class: "glyphicon glyphicon-star") if sponsored?
+  end
+
   def preview_css
     'preview' unless object.persisted?
   end

app/views/staff/time_slots/_time_slots.html.haml

@@ -43,6 +43,7 @@
             %th Title
             %th Presenter
             %th Room
+            %th Sponsor
             %th Track
             %th.actions Actions
         %tbody