Following /tg/'s lead, removes set background 1 for smoother gameplay.

Conflicts:
	code/game/objects/effects/glowshroom.dm
	code/modules/mob/living/carbon/zombie/zombie.dm
	code/modules/mob/living/silicon/mommi/life.dm

code/controllers/lighting_controller.dm

@@ -33,7 +33,7 @@ datum/controller/lighting/New()
 datum/controller/lighting/proc/process()
 	processing = 1
 	spawn(0)
-		set background = 1
+		//set background = 1
 		while(1)
 			if(processing)
 				iteration++
@@ -67,7 +67,7 @@ datum/controller/lighting/proc/process()
 datum/controller/lighting/proc/Initialize(var/z_level)
 	processing = 0
 	spawn(-1)
-		set background = 1
+		//set background = 1
 		for(var/i=1, i<=lights.len, i++)
 			var/datum/light_source/L = lights[i]
 			if(L.check())