TG: Fixed issue 287 , 290, 291

-Cutting/restoring cameras now leaves a print
-building certain overly-abused griff items leaves prints
-grenade launcher no longer shoots your face if you try to backpack it

Chameleon projector movement speed is now based on temperature
Added add_hiddenprint(mob) proc
it's like add_fingerprint but only adds to fingerprintshidden isn't that neat? r2898

code/game/objects/stacks/stack.dm

@@ -20,7 +20,7 @@
 /obj/item/stack/examine()
 	set src in view(1)
 	..()
-	usr << text("There are [] []\s left on the stack.", src.amount, src.singular_name)
+	usr << "There are [src.amount] [src.singular_name]\s in the stack."
 	return
 
 /obj/item/stack/proc/use(var/amount)
@@ -204,6 +204,12 @@
 			del(oldsrc)
 			if (istype(O,/obj/item))
 				usr.put_in_hand(O)
+		O.add_fingerprint(usr)
+		//BubbleWrap - so newly formed boxes are empty
+		if ( istype(O, /obj/item/weapon/storage) )
+			for (var/obj/item/I in O)
+				del(I)
+		//BubbleWrap END
 	if (src && usr.machine==src) //do not reopen closed window
 		spawn( 0 )
 			src.interact(usr)