Merge branch 'master' into oc_preview

3rdparty

apps/files/l10n/cs_CZ.php

apps/files/l10n/hi.php

apps/files_encryption/l10n/cs_CZ.php

apps/files_versions/l10n/sv.php

apps/user_ldap/l10n/cs_CZ.php

apps/user_ldap/l10n/ru.php

core/l10n/cs_CZ.php

core/l10n/fr.php

core/l10n/hi.php

l10n/af_ZA/core.po

l10n/af_ZA/lib.po

l10n/ar/core.po

l10n/ar/files.po

l10n/ar/files_external.po

l10n/ar/files_sharing.po

l10n/ar/files_trashbin.po

l10n/ar/lib.po

l10n/ar/settings.po

l10n/ar/user_ldap.po