conk rete (#8671)

* concrete

* fixy

* craftable concrete and plasteel rebar

* no map specific children on submaps

* fix

* de-concretes the station

code/modules/materials/sheets/metals/metal.dm

@@ -12,6 +12,19 @@
 	no_variants = FALSE
 	apply_colour = TRUE
 
+/obj/item/stack/material/plasteel/rebar
+	name = MAT_PLASTEELREBAR
+	icon_state = "rods"
+	default_type = MAT_PLASTEELREBAR
+	apply_colour = 1
+
+/obj/item/stack/material/plasteel/rebar/update_icon()
+	var/amount = get_amount()
+	if((amount <= 5) && (amount > 0))
+		icon_state = "rods-[amount]"
+	else
+		icon_state = "rods"
+
 /obj/item/stack/material/durasteel
 	name = "durasteel"
 	icon_state = "sheet-reinforced"

code/modules/materials/sheets/stone.dm

@@ -13,3 +13,10 @@
 	no_variants = FALSE
 	drop_sound = 'sound/items/drop/boots.ogg'
 	pickup_sound = 'sound/items/pickup/boots.ogg'
+
+/obj/item/stack/material/concrete
+	name = "concrete brick"
+	icon_state = "brick"
+	default_type = "concrete"
+	no_variants = FALSE
+	apply_colour = 1