Merge pull request #17709 from owncloud/fileactions-dropdown

apps/files/css/files.css

apps/files/css/mobile.css

apps/files/index.php

apps/files/js/fileactions.js

apps/files/js/fileactionsmenu.js

apps/files/js/filelist.js

apps/files/js/tagsplugin.js

apps/files/tests/js/fileactionsSpec.js

apps/files/tests/js/fileactionsmenuSpec.js

apps/files/tests/js/filelistSpec.js

apps/files_sharing/js/share.js

apps/files_sharing/templates/public.php

apps/files_sharing/tests/js/shareSpec.js

apps/files_trashbin/js/app.js

core/css/apps.css

core/js/core.json

core/js/js.js

core/js/share.js