CircleCI: lint and unit tests should pass during deployment of `dev` or `master` branch.

[maxceem]

Now all the unit tests are up to date.

To make sure that we are only deploying correct code, during deploying we have to run:

• npm run lint to make sure lint pass
• npm run test to make sure unit tests pass

If lint or unit tests fail the deployment process should be terminated.

@nkumar-topcoder should we config it ourselves? or is there someone from Topcoder infrastructure team who might help us with this?