[tx-robot] updated from transifex

apps/files/l10n/de.php

apps/files/l10n/de_DE.php

apps/files/l10n/et_EE.php

apps/files/l10n/gl.php

apps/files/l10n/it.php

apps/files_encryption/l10n/el.php

apps/files_sharing/l10n/el.php

apps/user_ldap/l10n/el.php

core/l10n/de.php

core/l10n/de_DE.php

core/l10n/el.php

core/l10n/et_EE.php

core/l10n/gl.php

core/l10n/ja_JP.php

core/l10n/ru_RU.php

l10n/ar/core.po

l10n/bn_BD/core.po

l10n/ca/core.po

l10n/cs_CZ/core.po

l10n/cy_GB/core.po