Hi, great news.
I've added 'eu' => 'Euskara' to the translation portal. Let me know when it is more or less complete, and I'll commit new dictionary files.
If you see that translating the whole set of tags is too much work, I'm fine with a translation that cover the most important parts. In example you can leave out translating the english error messages if you want.
Andreas Åkre Solberg