I should be able to determine the membership status of the current user
        
          Summary: There are some hacks around this, but I don't think they are reliable.
I think this implies at least three new functions implied here:
_isSpaceMember -- the most important, produces true iff the viewer is a member of this Space. 
_isQuerkiMember -- produces true iff the viewer is a logged-in member of Querki, regardless of whether they are a member of this Space. 
_hasVerifiedEmail -- produces true iff the viewer has verified their email address. 
_isSpaceMember can be worked around as _me(warnIfNotLocal = false), but that's clumsy.  We should probably have something better.