Fixes siemens_coefficent not affecting shock damage

Also cleans up electrocute_act()

Conflicts:
	code/game/gamemodes/events/ninja_equipment.dm
	code/modules/mob/living/carbon/carbon.dm
	code/modules/mob/living/carbon/human/human.dm

code/modules/power/power.dm

@@ -455,6 +455,9 @@
 //No animations will be performed by this proc.
 /proc/electrocute_mob(mob/living/carbon/M as mob, var/power_source, var/obj/source, var/siemens_coeff = 1.0)
 	if(istype(M.loc,/obj/mecha))	return 0	//feckin mechs are dumb
+	
+	//This is for performance optimization only. 
+	//DO NOT modify siemens_coeff here. That is checked in human/electrocute_act()
 	if(istype(M,/mob/living/carbon/human))
 		var/mob/living/carbon/human/H = M
 		if(H.gloves)