I have fixed the character encoding problem which has affected the wiki user interface for the last several months. There are still some translations missing, and some translations in the original language files for the wiki are bad or even erroneous, but the encoding problems are gone.
Now, if someone uses the language editing interface of the wiki to enter new translations or to improve some old ones, please make sure that your browser is set to use utf-8 encoding otherwise there may/will be problems. I'd also like to be informed of any new translations so I can modify our custom translation files accordingly for future db updates.