the only remaining use was klocale:
- languageCodeToName now goes through qlocale. it's worse data than before, with variants not being properly mapped into native names. alas, what isn't worse when relying on posix locales :|
- readOptions' default setting of a langauge now iters the configured languages in klocalizedstring (which in turn comes from the LANGUAGE env var + some extra fallback sugar) to find a language we know. if none was found we continue to fall back to en.soundtheme