[xwiki-users] translations

Hi guys, I chose to have our XWiki to be translated into German. The standard setting to "de" does only change some portions of the Wiki. Is the prefered way to have everything translated to manipulate all standard templates or is there some kind of better, more stable way? What happens if I translate stuff in the templates and update the XWiki later on. Would they vanish again? If I go on translating the stable and preferred way, which I hope you give me some suggestions for, I'm willing to give you the work back, if you like, of course. Cheers, Sebastian