MMS - Update French translation

patch 1: removed unused strings
patch 2: added, but I don't know how to translate it,
if you find a better way do say it, please say me :)
patch 3: fix a translation
patch 4: improve translations
patch 5: fix few translations (thank's everyone)

Change-Id: I283a8503b7375fc93d5577b0d877bcd7848ee5a5