Thanks to Rafael Soares, we now have Brazilian-Portuguese installer messages forRHQ
Those translated messages currently live in the 'translations' branch in git (which will shadow the master branch).
While we use I18Nlog for I18N output, there is no need to modify the java file, but one can just supply the "classical" .properties files for it.
We want you!
So if you want to help translate messages to your language, contact us and/or just start right away :) Make sure to also to check out the contributions page on our wiki.