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/game/objects/items/robot/robot_upgrades.dm

@@ -254,7 +254,8 @@
 
 	cyborg = R
 	icon_state = "selfrepair_off"
-	action_button_name = "Toggle Self-Repair"
+	var/datum/action/A = new /datum/action/item_action/toggle(src)
+	A.Grant(R)
 	return 1
 
 /obj/item/borg/upgrade/selfrepair/Destroy()
@@ -276,6 +277,9 @@
 /obj/item/borg/upgrade/selfrepair/update_icon()
 	if(cyborg)
 		icon_state = "selfrepair_[on ? "on" : "off"]"
+		for(var/X in actions)
+			var/datum/action/A = X
+			A.UpdateButtonIcon()
 	else
 		icon_state = "cyborg_upgrade5"