Merge pull request #2406 from nextcloud/move-dav-activities-to-new-api

apps/dav/appinfo/info.xml

apps/dav/lib/AppInfo/Application.php

apps/dav/lib/CalDAV/Activity/Backend.php

apps/dav/lib/CalDAV/Activity/Extension.php

apps/dav/lib/CalDAV/Activity/Filter/Calendar.php

apps/dav/lib/CalDAV/Activity/Filter/Todo.php

apps/dav/lib/CalDAV/Activity/Provider/Base.php

apps/dav/lib/CalDAV/Activity/Provider/Calendar.php

apps/dav/lib/CalDAV/Activity/Provider/Event.php

apps/dav/lib/CalDAV/Activity/Provider/Todo.php

apps/dav/lib/CalDAV/Activity/Setting/Calendar.php

apps/dav/lib/CalDAV/Activity/Setting/Event.php

apps/dav/lib/CalDAV/Activity/Setting/Todo.php

apps/dav/tests/unit/CalDAV/Activity/BackendTest.php

apps/dav/tests/unit/CalDAV/Activity/Filter/CalendarTest.php

apps/dav/tests/unit/CalDAV/Activity/Filter/GenericTest.php

apps/dav/tests/unit/CalDAV/Activity/Filter/TodoTest.php

apps/dav/tests/unit/CalDAV/Activity/Provider/BaseTest.php

apps/dav/tests/unit/CalDAV/Activity/Setting/GenericTest.php

core/img/places/calendar-dark.svg