Some translations are very out of date

[jblang]

Many of the translations are very out of date and missing phrases. Only Hungarian, German, and Russian are reasonably up to date.

[cvermot]

Since push request #141, french translation should be up to date !

[kovzol]

Added this piece of info on https://github.com/xaos-project/XaoS/wiki/Internationalization. Maybe a table can be useful in the future to maintain the state of translations.