Final Pass

Breaks Facial Hair updates into their own proc and puts facial hair on
its own layer.
Works through everything that calls update_hair with the intention of
updating facial hair and adds update_fhair
Fixes the sprite names and colouring on all 'facial' and 'body marking'
aspects.

Fixes/implements proper ID photo/preferences preview picture generation.

To do: Tail marking customization possible rework, gutting in the
meantime

code/modules/organs/subtypes/standard.dm

@@ -145,6 +145,7 @@
 		owner.unEquip(owner.wear_mask)
 		spawn(1)
 			owner.update_hair()
+			owner.update_fhair()
 	..()
 
 /obj/item/organ/external/head/take_damage(brute, burn, sharp, edge, used_weapon = null, list/forbidden_limbs = list())