[tx-robot] updated from transifex

apps/files/l10n/de_DE.php

apps/files/l10n/pl.php

apps/files/l10n/ru_RU.php

apps/files/l10n/sl.php

apps/files_encryption/l10n/el.php

apps/files_encryption/l10n/pl.php

apps/files_encryption/l10n/sl.php

apps/files_external/l10n/ar.php

apps/files_external/l10n/ru_RU.php

apps/files_trashbin/l10n/ru_RU.php

apps/user_ldap/l10n/ca.php

apps/user_ldap/l10n/de.php

apps/user_ldap/l10n/de_DE.php

apps/user_ldap/l10n/en_GB.php

apps/user_ldap/l10n/es.php

apps/user_ldap/l10n/et_EE.php

apps/user_ldap/l10n/fr.php

apps/user_ldap/l10n/gl.php

apps/user_ldap/l10n/it.php

apps/user_ldap/l10n/nl.php