Trac 0.12 is out. Since this plugin does contribute a navigation item to Trac, it can't integrate well into i18n-aware environments without supporting translations itself. I recommend to have a dedicated branch for this development.
Raise your voice, if you see much more benefit from doing a hybrid 0.11/0.12 version, that would have i18n just as an option. I've done this before, but this certainly requires more work for both development and testing at every stage of the life cycle. So please be reasonable with requests, in case you're not able/willing to contribute.