Pontoon: Updated Portuguese (pt-BR) localization of Pontoon Intro
Pontoon: Updated Portuguese (pt-BR) localization of Pontoon Intro

Translation authors:
- Wolfgang Marcos <wolfgang@cryptolab.net>

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