Tombstone a4

-upped damage from snake venom
-made sentries lose ammo when the fist fight starts
-minor prop adjustments
-health pickups changed in underworld
-portals now heal upon entering
-text lasts longer on screen- 10 seconds instead of 1
displacement adjustments
-clipping fixes
-gargoyles

-added two new effects, invigorating song which causes overheal, and viper venom which spawns trigger_hurts in spots around the map
-fixed portals not allowing players
-minor detailing work
-improved lighting

-added more health around mid
-added a new route past mid
-tweaked lighting on mid
-sped up boo-let speed
-lowered balcony on mid
-lowered roofs around mid
-fixed portals not allowing players into them
-optimization tweaks