Assault Pods & Fixes

Fixes:
 - Lighting system bandaid: Lighting overlays can't go below 0 lum ever
 - -tg- shuttles now use changeTurf() and forceMove() appropriately
 - forceMove() actually bothers to update lighting now
 - Fixed teleportlocs including prohibited areas. Sorry wizards, no more
   area teleporting to Central Command.

Misc changes:
 - Moved the emergency shuttle stuff to the modules/shuttles/ folder
 - Moved the cargo shuttle stuff to the modules/shuttles/ folder

Features:
 - Added nukeops assault-pod. Nuke ops may purchase a destination setter
   for 30 telecrystals.
   The assault pod is a shuttle, equipped with 8 turrets that use
   weakbullet3. When an area is selected, a destination will be randomly
   placed in one of the turfs in that area. The pod will gib anyone
   standing in the area where it lands, and overwrite any turfs.

code/datums/uplink_item.dm

@@ -856,6 +856,15 @@ var/list/uplink_items = list()
 	gamemodes = list(/datum/game_mode/nuclear)
 	surplus = 0
 
+/datum/uplink_item/device_tools/assault_pod
+	name = "Assault Pod Targetting Device"
+	desc = "Use to select the landing zone of your assault pod."
+	item = /obj/item/device/assault_pod
+	reference = "APT"
+	cost = 30
+	gamemodes = list(/datum/game_mode/nuclear)
+	surplus = 0
+
 /datum/uplink_item/device_tools/shield
 	name = "Energy Shield"
 	desc = "An incredibly useful personal shield projector, capable of reflecting energy projectiles and defending against other attacks."