Merge branch 'master' into fixing-4011-master

apps/files/ajax/rawlist.php

apps/files/css/files.css

apps/files/css/upload.css

apps/files/index.php

apps/files/js/files.js

apps/files/l10n/cs_CZ.php

apps/files/l10n/it.php

apps/files/l10n/ja_JP.php

apps/files/l10n/ko.php

apps/files/l10n/lt_LT.php

apps/files/l10n/pl.php

apps/files/lib/helper.php

apps/files/templates/index.php

apps/files/templates/part.list.php

apps/files_encryption/ajax/updatePrivateKeyPassword.php

apps/files_encryption/appinfo/app.php

apps/files_encryption/appinfo/info.xml

apps/files_encryption/appinfo/version

apps/files_encryption/files/error.php

apps/files_encryption/hooks/hooks.php