Randomized Spawn Points

[Coestar]

For some game types, it would be advantageous to have random spawn locations. This could be potentially best implemented by providing coordinate based spawn locations that are specific to the plugin, and potentially specific to maps as well. Further, it would be handy if they could be associated with teams as well.

[kolinkrewinkel]

Partially achieved (no configurability) as of 0d99bf3