Adds lag check to diseases and events (and removes lighting from dwait)

lighting removed from dewait because lag checks are better for it and lag checked subsystems that are also dwait systems are given lower priority, we don't want that to happen to lighting.

code/controllers/subsystem/lighting.dm

@@ -5,9 +5,7 @@ var/datum/subsystem/lighting/SSlighting
 /datum/subsystem/lighting
 	name = "Lighting"
 	priority = 1
-	wait = 5
-	dynamic_wait = 1
-	dwait_delta = 3
+	wait = 6
 	display = 5
 
 	var/list/changed_lights = list()		//list of all datum/light_source that need updating