Merge branch 'master' into readdir-strict-equals

apps/files_external/lib/google.php

apps/files_external/lib/webdav.php

apps/files_sharing/lib/sharedstorage.php

lib/base.php

lib/connector/sabre/quotaplugin.php

lib/fileproxy/quota.php

lib/files/filesystem.php

lib/files/mount/manager.php

lib/files/mount/mount.php

lib/files/storage/common.php

lib/files/storage/local.php

lib/files/storage/wrapper/quota.php

lib/files/storage/wrapper/wrapper.php

lib/files/stream/quota.php

lib/helper.php

lib/util.php

tests/lib/files/storage/wrapper/quota.php

tests/lib/files/storage/wrapper/wrapper.php

tests/lib/files/stream/quota.php