Comitted on behalf of BubbleWrap

- Boxes can now be collapsed down into cardboard sheets.
- Cardboard sheets are stackable (like glass and metal).
- Cardboard sheets can be made back into boxes when needed.
- Cardboard sheets can also be made into a cardboard cyborg costume.

git-svn-id: http://tgstation13.googlecode.com/svn/trunk@3028 316c924e-a436-60f5-8080-3fe189b3f50e

code/game/objects/stacks/stack.dm

@@ -206,6 +206,11 @@
 			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)