Pontoon: Updated Arabic (ar) localization of Pontoon Intro
Pontoon: Updated Arabic (ar) localization of Pontoon Intro

Translation authors:
- Abdelrahman Manna <abood.fcb@hotmail.com>

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