[tx-robot] updated from transifex

apps/files_external/l10n/de.php

apps/files_external/l10n/it.php

l10n/de/files_external.po

l10n/it/files_external.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_versions.pot

l10n/templates/lib.pot

l10n/templates/settings.pot

l10n/templates/user_ldap.pot