doohickey a2a

-reverted back to default spawn wave times
-added some pillars
-other adjustments
i really just wanna get this update out RIGHT NOW i dont wanna type all this out

-added a door to the final point areas to hopefully assist attackers
-sliiiightly widened the mid point area
-added a wall to break sightlines from the left last point exit to the left base exit
-added an overlay to hopefully make the supply corner more noticeable
-added func_nobuild on top of the water barrels
-small adjustments

-added more signs
-added spectator camera points