Changed thumbnail image for youtube videos to the default image with higher resolution.
Merge branch 'hotfix/youtube-previewimage-size'
Merge branch 'hotfix/youtube-previewimage-size' into develop
Merge branch 'release/0.0.4'
Hotfix for deleted users.
Bundle run.
Downgrade jQuery to 2.3.0 for fixing deploying problems with active admin and not finding jquery ui...
Fixed issue with deleted person in posts show view.
Hotfix for author problem when deleted.
Enable token authentication for auth json requests.
Add attributes for current user in json object after login.
Updated gemfile.
Changed bootstrap version for compatibility.
Bundle update and migration.
Removed comments from abilities and controllers for enabled token auth.
Resolved merge conflicts. TODO course show view: merge conflict is commented for resolving.
Resolved merge conflicts in course controller and abilities.