[tx-robot] updated from transifex

apps/files_external/l10n/de.php

apps/files_external/l10n/de_DE.php

apps/files_sharing/l10n/ar.php

apps/files_versions/l10n/ar.php

apps/user_ldap/l10n/ar.php

apps/user_ldap/l10n/de.php

apps/user_ldap/l10n/de_DE.php

apps/user_webdavauth/l10n/ar.php

apps/user_webdavauth/l10n/de.php

apps/user_webdavauth/l10n/uk.php

core/l10n/de.php

core/l10n/de_DE.php

l10n/ar/files_sharing.po

l10n/ar/files_versions.po

l10n/ar/settings.po

l10n/ar/user_ldap.po

l10n/ar/user_webdavauth.po

l10n/de/core.po

l10n/de/files_external.po

l10n/de/settings.po