Tg port 2 15 (#230)

* defines/helpers

* globalvars, onclick, controllers

* datums and game

* woooooooooorld. Uh. dm

* modules sans mobs client admin

* modules/admin

* pref shit

* modules/mob

* icon updates

* extra things

* Cherrypicked fixes from open PRs

* metastation.tgm fix

* a better meta fix

* reverts async breakings

code/modules/power/gravitygenerator.dm

@@ -69,7 +69,6 @@ var/const/GRAV_NEEDS_WRENCH = 3
 /obj/machinery/gravity_generator/part/Destroy()
 	if(main_part)
 		qdel(main_part)
-		return QDEL_HINT_LETMELIVE
 	set_broken()
 	return ..()
 
@@ -137,7 +136,8 @@ var/const/GRAV_NEEDS_WRENCH = 3
 	update_list()
 	for(var/obj/machinery/gravity_generator/part/O in parts)
 		O.main_part = null
-		qdel(O)
+		if(!QDESTROYING(O))
+			qdel(O)
 	return ..()
 
 /obj/machinery/gravity_generator/main/proc/setup_parts()