[tx-robot] updated from transifex

core/l10n/el.php

l10n/el/core.po

l10n/el/lib.po

l10n/templates/core.pot

l10n/templates/files.pot

l10n/templates/files_encryption.pot

l10n/templates/files_external.pot

l10n/templates/files_sharing.pot

l10n/templates/files_trashbin.pot

l10n/templates/files_versions.pot

l10n/templates/lib.pot

l10n/templates/private.pot

l10n/templates/settings.pot

l10n/templates/user_ldap.pot

l10n/templates/user_webdavauth.pot

lib/l10n/el.php