Translations update

Regular translations update:
12 Nov => 19 Nov.
Russian and Argentinian has motd/credits updates.
Argentinian has long strings in motd and credits. Issue reported to translators and will be fixed on next week.

Launchpad updates:
* German
* Japanese
* Chinese (Simplified)
* Chinese (Traditional)

Transifex updates:
* Russian
* Italian
* Argentinian

Other languages without updates.