Merge pull request #18742 from owncloud/mimetype-updatedb

apps/files_sharing/lib/cache.php

core/command/maintenance/mimetype/updatedb.php

core/command/maintenance/mimetype/updatejs.php

core/register_command.php

lib/private/files/cache/cache.php

lib/private/files/type/detection.php

lib/private/files/type/loader.php

lib/private/server.php

lib/public/files/imimetypeloader.php

lib/public/iservercontainer.php

tests/core/command/maintenance/mimetype/updatedbtest.php

tests/lib/files/type/loadertest.php

tests/lib/repair/repairmimetypes.php