Spawn wave changes

Im probably not the only one who misses respawn waves sometimes and I think there should be a change. The respawn wave should leasts for about 3-5 seconds so you have time to spawn if you die right when the wave spawns.

@zayzek I agree because it's uber annoying getting rpg sniped right after you heroically capped/blew the last obj as last man. You get rewarded with death.

A small buffer would be nice. But sometimes you just gotta sit out 25 seconds.