Allows the console to vanish players ingame with /vanish
It can be extended to vanish other people while in game, Mods type /vanish ingame to vanish someone....
Thanks.

a while back mbaxter very kindly wrote me a plugin that did this, but some update or other broke it ;(

Being able to vanish and unvanish others would be really useful for, for example, spectators to ultrahardcore matches

#150