[Any Admin Mod] Secondary User Groups - Easy donation system!

1. Fixed SetUp error
2. Fixed issue of rejoining needed for rank to be fully removed
3. Added hooks ( "SG.PlayerRankUpdated" [steamid, new_rank, old_rank] ) and ( "SG.PlayerRankRemoved", [steamid, old_rank] )

1. Fixed console command not deleting groups
2. Fixed console command not removing users
3. Fixed errors that would occur when user console commands and admins did not have the menu open

1. Fixed issue on Nitrous Networks

1. Fixes issue of players needing to rejoin to get their group.

1. Quick fix

Initial version.