Pontoon: Updated Polish (pl) localization of Pontoon Intro
Pontoon: Updated Polish (pl) localization of Pontoon Intro

Translation authors:
- Teo Życzkowski <leszekz@gmail.com>

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