Update French translation
Update French translation


ATM, translation have been improved and now reach a 92 percents of translated strings.

Untranslated strings remains due to:
 - Some strings do not need to be translated (e.g. not displayed string, internal object name)
 - Some strings should not be translated (e.g. some persistent object names, saved entries)
 - I do not know which is the correct translation for some strings (help is welcome :) )
 - I do not understand when strings are used (e.g. dead code?, I'm not able to produce a test case)


danheeks/heekscad,danheeks/heekscad,danheeks/heekscad,danheeks/heekscad