Part 1 of economy rework: Spacecash refactor - See commit for full changelog.

* Implements stacking and stack overlays
 * Simplified tiers of cash (1,10,100,500,1000, may remove 500)
 * Simplified API (dispense_cash, count_cash)

Conflicts:
	code/modules/admin/admin_verbs.dm
	code/modules/admin/verbs/debug.dm
	code/modules/economy/ATM.dm

code/game/objects/structures/crates_lockers/closets/secure/freezer.dm

@@ -99,12 +99,7 @@
 	New()
 		..()
 		sleep(2)
-		for(var/i = 0, i < 3, i++)
-			new /obj/item/weapon/spacecash/c1000(src)
-		for(var/i = 0, i < 5, i++)
-			new /obj/item/weapon/spacecash/c500(src)
-		for(var/i = 0, i < 6, i++)
-			new /obj/item/weapon/spacecash/c200(src)
+		dispense_cash(6700,src)
 		return