Brief summary of issue / Description of requested feature:

We now have Brazilian Portugese translation in Crowdin - let's add it to Mudlet so the language can be selected for use.

Steps to reproduce the issue / Reasons for adding feature:

1. More i18n. I heard there's Brazilian MUDs out there

Error output / Expected result of feature

Portugese (Brazilian) available as a language to use in Mudlet

Extra information, such as Mudlet version, operating system and ideas for how to solve / implement:

Can integrate it by looking at how other languages are done.