the Index action on GamingGroupController is working now.
just got started on the GamingGroupController GrantAccess action. Not done.
fixed integration tests that were failing due to not-nullable OwningUserId on GamingGroup.
need to update the UI of GamingGroupController Index so you can enter an invitation email address, and so it shows pending invites.
can now create records in the GamingGroupInvite table, but they don't show on the gaming group page and they dont get applied to new registrations.