A lot of work but I got most of it done. Important to not that not only theme file needs to be translated but also the Wishlist translation.
Tip for other users: Try https://translate.google.com/toolkit/workbench to make initial translations and fix / compile with POEDIT.
POEDIT limits number of the suggested translations.. so in the free version you need to translate a lot by hand. YOu need POEDIT to verify and compile however.
Read more here
