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

Localization authors:
- Théo Chevalier <theo.chevalier11@gmail.com>

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