Fixes #263, #235. Tweaks ED

Asides from two small bugfixes, adjusts Emergency Doors.

code/modules/mob/living/carbon/human/life.dm

@@ -260,7 +260,7 @@
 
 	proc/handle_mutations_and_radiation()
 
-		if(species.flags & IS_SYNTHETIC || species.name == "Vaurca") //Robots/bugs don't suffer from mutations or radloss.
+		if(species.flags & IS_SYNTHETIC || species.name == "Vaurca") //Robots & bugs don't suffer from mutations or radloss.
 			return
 
 		if(getFireLoss())

code/modules/mob/living/carbon/human/species/xenomorphs/alien_facehugger.dm

@@ -127,14 +127,14 @@ var/const/MAX_ACTIVE_TIME = 400
 
 	L.visible_message("\red \b [src] leaps at [L]'s face!")
 
-	/* Tentatively removed since huggers can't be thrown anymore
+
 	if(ishuman(L))
 		var/mob/living/carbon/human/H = L
 		if(H.head && H.head.flags & HEADCOVERSMOUTH)
 			H.visible_message("\red \b [src] smashes against [H]'s [H.head]!")
 			Die()
 			return
-	*/
+
 
 	if(iscarbon(M))
 		var/mob/living/carbon/target = L