Merge pull request #11669 from Ghommie/Ghommie-cit651

Ports "Fixes vault and high security door material exploit and tweaks high security door cost"

code/game/objects/structures/door_assembly.dm

@@ -243,6 +243,7 @@
 				//door.req_access = req_access
 				door.electronics = electronics
 				door.heat_proof = heat_proof_finished
+				door.security_level = 0
 				if(electronics.one_access)
 					door.req_one_access = electronics.accesses
 				else

code/game/objects/structures/door_assembly_types.dm

@@ -114,7 +114,7 @@
 	airlock_type = /obj/machinery/door/airlock/highsecurity
 	noglass = TRUE
 	material_type = /obj/item/stack/sheet/plasteel
-	material_amt = 6
+	material_amt = 4
 
 /obj/structure/door_assembly/door_assembly_vault
 	name = "vault door assembly"
@@ -124,7 +124,7 @@
 	airlock_type = /obj/machinery/door/airlock/vault
 	noglass = TRUE
 	material_type = /obj/item/stack/sheet/plasteel
-	material_amt = 8
+	material_amt = 6
 
 /obj/structure/door_assembly/door_assembly_shuttle
 	name = "shuttle airlock assembly"