Discussion of proposed design for careteam work

Available for review, but please don't merge yet.
I think I disagree, the "Dismiss/Ignore invitation" and the "Accept invitation" calls are also from the *receiver's* perspective...

But this is fine, I don't want to get into to much "what should the URLs look like" discussion, because I know it's very subjective what makes a "pretty" and "expressive" URL :) The functionality I expected is there, that's all that matters..