Action Button Update

- Refactors action button backend
   - Action buttons are no longer checked on Life(), items are responsible
     for adding/removing/updating them.
   - Item action buttons are no longer a static action_button_name define,
     items define actions_types, which is a list of paths.
   - Items can now have multiple action buttons.
     - This is handled by new arguments to ui_action_click, the first
       parameter is the user, the second is the path of the action datum
       that was invoked.
 - Refactored how internals function
   - You may now directly switch internals without breaking anything.
   - The internals icon has been updated to be more consistent.
 - Added action buttons for jetpacks
 - Added action buttons for oxygen tanks
 - Uses-based implants now qdel() themselves when they run out of uses.
   This is somewhat a buff to traitor implants, but it's such a minor
   change. The actual reasoning is so that the action buttons are properly
   removed.
 - Fixed a bug with the "Boo" spell which resulted in IsAvailable failing
   for certain ghosts.
 - You can now shift-click on movable HUD elements to reset them to the
   proper position (thank fucking christ)

code/datums/spell.dm

@@ -134,6 +134,7 @@ var/list/spells = typesof(/obj/effect/proc_holder/spell) //needed for the badmin
 
 /obj/effect/proc_holder/spell/New()
 	..()
+	action = new(src)
 
 	still_recharging_msg = "<span class='notice'>[name] is still recharging.</span>"
 	charge_counter = charge_max
@@ -152,9 +153,13 @@ var/list/spells = typesof(/obj/effect/proc_holder/spell) //needed for the badmin
 	return
 
 /obj/effect/proc_holder/spell/proc/start_recharge()
+	if(action)
+		action.UpdateButtonIcon()
 	while(charge_counter < charge_max)
 		sleep(1)
 		charge_counter++
+	if(action)
+		action.UpdateButtonIcon()
 
 /obj/effect/proc_holder/spell/proc/perform(list/targets, recharge = 1, mob/user = usr) //if recharge is started is important for the trigger spells
 	before_cast(targets)