[reviewpls] Adds moodlets to the game - [Please give suggestions for trait additions in comments]

code/_onclick/hud/hud.dm

@@ -43,6 +43,7 @@
 	var/obj/screen/healths
 	var/obj/screen/healthdoll
 	var/obj/screen/internals
+	var/obj/screen/mood
 
 	var/ui_style_icon = 'icons/mob/screen_midnight.dmi'
 
@@ -103,6 +104,7 @@
 	healths = null
 	healthdoll = null
 	internals = null
+	mood = null
 	lingchemdisplay = null
 	devilsouldisplay = null
 	lingstingdisplay = null
@@ -268,4 +270,4 @@
 		show_hud(HUD_STYLE_STANDARD,mymob)
 
 /datum/hud/proc/update_locked_slots()
-	return
+	return