As a group admin I can leave a group

[miguael]

I guess that should not be possible. For when the admin has the possibility to leave the group, there is no admin assigned to it. It should be that the admin first needs to assign another admin (in short: the only admin of a group should not be able to leave)

[cnorris23]

The code to prevent an admin from leaving the group is in core, but I haven't yet figured out why it's not being called. I just started digging, so we'll see what happens.

I've also noticed that on my test site, that the "Leave Group" link is shown on all the groups I create/administer, except for the very first group I create/administer.

[cnorris23]

Turns out, the absence of the "Leave Group" link on the first group I create has to do with the fact that the group is hidden. It just so happened that the first group I created was always hidden.

[apeatling]

(In [2538]) Fixes #1753