Merge pull request #1738 from nextcloud/comments-provide-displaynames-with-mentions

apps/comments/appinfo/app.php

apps/comments/css/comments.css

apps/comments/js/commentmodel.js

apps/comments/js/commentstabview.js

apps/comments/lib/Notification/Listener.php

apps/comments/tests/Unit/Notification/ListenerTest.php

apps/comments/tests/js/commentstabviewSpec.js

apps/dav/lib/Comments/CommentNode.php

apps/dav/tests/unit/Comments/CommentsNodeTest.php

lib/private/Comments/Comment.php

lib/private/Comments/Manager.php

lib/public/Comments/IComment.php

lib/public/Comments/ICommentsManager.php

tests/lib/Comments/CommentTest.php

tests/lib/Comments/FakeManager.php

tests/lib/Comments/ManagerTest.php