add more info to group member details

I noticed under "Entity Details" of the grouper UI where I see name, path and all sorts of other
stuff. I assume we can add it ourselves but figured it would be a general desirable thing to
also show:

number of memberships Total, direct, indirect and any other statistics about number of group admins
and so on. OR, to place this count information into the Group Summary to save me a click would also
be appreciated.

(from MichaelG)

Note from Chris, I think it would require a click for performance reasons...