Fix sending friend online notifications.
Bunch of other fixes that go along with the last commit.
Add the saving of the RegionURI into the UserInfo (so that the databases are the same between Async-Sim and Aurora-Sim).
Last fix to kicking group avatars out of parcels.
Majorly tighten up ban walls.
Merge branch 'master' of git://github.com/aurora-sim/Aurora-Sim