World aware point reset

[MrZoraman]

The /point reset only resets the compass for the world the user is in. The goal of this command is to have the compass behave as if the plugin hasn't messed with it at all.

I think the best way to go around this is to have the plugin hold an internal state for each player, and if that state is true, then set the compass to the world spawn location each time they change worlds, so that it works for all worlds.

This would be a lot easier if there was a bukkit api function for resetting the compass, but after 2 seconds of searching around in my little netbeans intellisense window, I didn't see much. Maybe there is an api call out there...