Significantly narrowed the tank side of the map to match Halo 4.

Raised the bridge and changed the terrain on tank side to match Halo 4.

Replaced all of the trees with newer trees.

Added dust for ambiance.

Added spawn volumes to control respawns for objective game types.

*eventually I will move red base forward and rotate it slightly to make the yard in front of red base smaller like in halo 4*