[tx-robot] updated from transifex

apps/files/l10n/fr.php

apps/files/l10n/tr.php

apps/files_encryption/l10n/sr.php

apps/files_sharing/l10n/tr.php

apps/user_webdavauth/l10n/tr.php

core/l10n/sr.php

core/l10n/tr.php

l10n/de/settings.po

l10n/fr/files.po

l10n/fr/settings.po

l10n/sr/core.po

l10n/sr/files_encryption.po

l10n/sr/settings.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