Pontoon: Update French (fr) localization of AMO
Pontoon: Update French (fr) localization of AMO

Localization authors:
- YD <ygda+fx@free.fr>
- Théo Chevalier <theo.chevalier11@gmail.com>

kumar303/olympia,eviljeff/olympia,kumar303/addons-server,mozilla/addons-server,bqbn/addons-server,mozilla/addons-server,wagnerand/addons-server,eviljeff/olympia,wagnerand/addons-server,kumar303/olympia,diox/olympia,bqbn/addons-server,psiinon/addons-server,psiinon/addons-server,wagnerand/addons-server,bqbn/addons-server,kumar303/addons-server,psiinon/addons-server,bqbn/addons-server,mozilla/olympia,mozilla/olympia,diox/olympia,diox/olympia,mozilla/olympia,kumar303/addons-server,eviljeff/olympia,diox/olympia,kumar303/olympia,wagnerand/addons-server,eviljeff/olympia,mozilla/olympia,kumar303/addons-server,kumar303/olympia,mozilla/addons-server,mozilla/addons-server,psiinon/addons-server