Fix genital layering

Ensures butts are layered in front of uniforms, but behind hands. Fixes belly changes from fix-hiding-butt.

modular_citadel/code/modules/arousal/organs/belly.dm

@@ -8,7 +8,7 @@
 	w_class 				= 3
 	size 					= 0
 	var/statuscheck			= FALSE
-	shape					= "round"
+	shape					= "Pair"
 	masturbation_verb 		= "massage"
 	can_masturbate_with 	= FALSE
 	can_climax				= FALSE

modular_citadel/code/modules/arousal/organs/genitals.dm

@@ -472,7 +472,7 @@
 			if(G.slot == "anus") //we have a different size system
 				genital_overlay.icon = 'hyperstation/icons/obj/genitals/butt.dmi'
 				genital_overlay.icon_state = "butt_[size]"
-				genital_overlay.layer = -FRONT_MUTATIONS_LAYER
+				genital_overlay.layer = -ID_LAYER //in front of suit, behind bellies.
 				colourcode = "butt_color"
 				if(use_skintones) //butts are forced a colour, either skin tones, or main colour. how ever, mutants use a darker version, because of their body tone.
 					genital_overlay.color = "#[skintone2hex(H.skin_tone)]"