Mms: FR translations

Patch set 2 : corrected a mistake.
Patch set 3 : plurals.
Patch set 4 : modified a verb.
Patch set 5 : fixed the derp.
Patch set 6 : rebase,missing plurals...
Patch set 7 : should merge now :)

Change-Id: Id4651c224ae28a145c114a64cb8deafe9e7757c4