Merge pull request #1449 from nextcloud/comments-user-mention

apps/comments/appinfo/app.php

apps/comments/appinfo/routes.php

apps/comments/lib/AppInfo/Application.php

apps/comments/lib/Controller/Notifications.php

apps/comments/lib/EventHandler.php

apps/comments/lib/Notification/Listener.php

apps/comments/lib/Notification/Notifier.php

apps/comments/tests/Unit/AppInfo/ApplicationTest.php

apps/comments/tests/Unit/Controller/NotificationsTest.php

apps/comments/tests/Unit/EventHandlerTest.php

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

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

apps/dav/lib/Comments/CommentNode.php

lib/composer/composer/autoload_classmap.php

lib/composer/composer/autoload_static.php

lib/private/AppFramework/DependencyInjection/DIContainer.php

lib/private/Comments/Manager.php

lib/public/Comments/CommentsEvent.php

lib/public/Comments/ICommentsEventHandler.php

lib/public/Comments/ICommentsManager.php