Planes Framework (#4545)

* Polaris initial plane upstream merge

* POLARIS: Fix RIG visors with new plane system, and material scanner VIS_FULLBRIGHT

* POLARIS: Fix GetFlatIcon so that cameras and id pictures don't show the HUD overlays.

* POLARIS: Adds a 'alter values' proc for plane master ease of tweaking

Setting stuff like colorblindness variety and things.

* Remove NIF reference, fix lighting layer define

* Handle effects above lighting plane

* Moved all layer defines to planes+layers.dm
* Fixed overlays that are supposed to be above lighting to use the PLANE_LIGHTING_ABOVE

* Merge: 3000% human/update_icons() speed improvement

* Merge: Avoid ghosts pointing at things

code/modules/admin/verbs/buildmode.dm

@@ -37,7 +37,8 @@
 /obj/effect/bmode//Cleaning up the tree a bit
 	density = 1
 	anchored = 1
-	layer = 20
+	layer = LAYER_HUD_BASE
+	plane = PLANE_PLAYER_HUD
 	dir = NORTH
 	icon = 'icons/misc/buildmode.dmi'
 	var/obj/effect/bmode/buildholder/master = null

code/modules/admin/verbs/randomverbs.dm

@@ -482,7 +482,7 @@ Traitors and the like can also be revived with the previous role mostly intact.
 		data_core.manifest_inject(new_character)
 
 	//A redraw for good measure
-	new_character.update_icons()
+	new_character.update_icons_all()
 
 	//If we're announcing their arrival
 	if(announce)