I'm sorry that I can't ask in french but

There seems an come up an kind of offical place to host and work on Translations so you might want to consider moving you Translation to the Translation server and have the platform to develop it further.

see

http://www.ubercart.org/news/jan-29-2008/ubercart_translation_station

you might have to ask rak to add the french language to the server just use that thread

http://www.ubercart.org/forum/internationalization/2702/%C3%BCbercart_in...