PT > EN translation needed for bug report

l10n
#1

Could please someone understanding Portuguese have a look at these bugs and
translate them:

https://bugs.freedesktop.org/show_bug.cgi?id=83681
https://bugs.freedesktop.org/show_bug.cgi?id=83673
https://bugs.freedesktop.org/show_bug.cgi?id=83629

Thanks,
Nino

(proof of concept, QA + l10n lists)