updating the addon translations, missed some files due missing git fu
- [DH] libravatar/lang/cs/messages.po
- [DH] libravatar/lang/cs/strings.php
- [DH] libravatar/lang/de/messages.po
- [DH] libravatar/lang/de/strings.php
- [DH] libravatar/lang/it/messages.po
- [DH] libravatar/lang/it/strings.php
- [DH] libravatar/lang/ro/messages.po
- [DH] libravatar/lang/ro/strings.php