Pontoon: Updated French (fr) localization of Pontoon Intro
Pontoon: Updated French (fr) localization of Pontoon Intro

Translation authors:
- alizee.aubertin <alizee.aubertin@gmail.com>

jotes/pontoon-intro,mathjazz/pontoon-intro,mathjazz/pontoon-intro,jotes/pontoon-intro,jotes/pontoon-intro,mathjazz/pontoon-intro