I'm inclined to simply update para 5. and leave the page alone after that. There's nothing actually wrong with it, and if someone comes across it from a link there are already many translations. I don't see it likely that there would be frequent edits, so it's not an on-going job.
Alright, I'm OK with that. How about removing the point "Be aware that your contribution will be governed by the licenses..." from Tasks and Tools and link to Guidelines instead? (E.g. "Please read the general guidelines for contributing to UserBase" or something like that).
Also I would like to move it to http://userbase.kde.org/Guidelines since /UserBase doesn't exist anymore, but that's for when we can move pages with translations (and not critical in any way).