Runtime fix: getFlatIcon() - Will no longer runtime should overlays contain any nulls. (Interesting note: I was intending to fix this to try speed up update_icons() even more but it turns out BYOND really dislikes overlays += null. the optimisation took twice as long o.O)

Removed unused caching code from getFlatIcon(). We handle our own caching using datacore.dm

Runtime fix: datacore wasn't checking the type of object in the wear_id inventory slot. I've removed that so it now uses mind.assigned_role instead.
The following runtime has occured 1 time(s).
runtime error: undefined variable /obj/item/device/pda/warden/var/assignment
proc name: manifest (/obj/effect/datacore/proc/manifest)
  source file: datacore.dm,14
  usr: null
  src: the datacore (/obj/effect/datacore)

Runtime fix: staff-of-change projectiles were runtiminng when transforming somebody with implants. Cause: forgot a "continue" >.<
The following runtime has occured 4 time(s).
runtime error: Cannot modify null.layer.
proc name: wabbajack (/obj/item/projectile/change/proc/wabbajack)
  source file: change.dm,37
  usr: 0
  src: the bolt of change (/obj/item/projectile/change)



git-svn-id: http://tgstation13.googlecode.com/svn/trunk@4412 316c924e-a436-60f5-8080-3fe189b3f50e

code/datums/datacore.dm

@@ -23,14 +23,12 @@
 /obj/effect/datacore/proc/manifest_inject(var/mob/living/carbon/human/H)
 	if(H.mind && (H.mind.assigned_role != "MODE"))
 		var/assignment
-		if(istype(H.wear_id))
-			var/obj/item/weapon/card/id/Card = H.wear_id
-			assignment = Card.assignment
+		if(H.mind.assigned_role)
+			assignment = H.mind.assigned_role
+		else if(H.job)
+			assignment = H.job
 		else
-			if(H.job)
-				assignment = H.job
-			else
-				assignment = "Unassigned"
+			assignment = "Unassigned"
 
 		var/id = add_zero(num2hex(rand(1, 1.6777215E7)), 6)	//this was the best they could come up with? A large random number? *sigh*