Failsafe added to the debug/restart controller verbs.dm

Failsafe now checks the lighting_controller too. It will restart it if it doesn't progress for 5 cycles (same as MC)
datum/failsafe is now datum/controller/failsafe

The probability of lights breaking after spawn was reduced from tube:10 and bulb:25 to tube:2 bulb:5

git-svn-id: http://tgstation13.googlecode.com/svn/trunk@4674 316c924e-a436-60f5-8080-3fe189b3f50e

code/modules/power/lighting.dm

@@ -244,11 +244,11 @@
 		switch(fitting)
 			if("tube")
 				brightness = 8
-				if(prob(10))
+				if(prob(2))
 					broken(1)
 			if("bulb")
 				brightness = 4
-				if(prob(25))
+				if(prob(5))
 					broken(1)
 		spawn(1)
 			update(0)