Update every initialize() proc to return an initialize hint.

* Yes, all of them.
* Also did a few corrections to redundant New() and broken Destroy() along the way
* Renamed the turf_initializer.initialize() proc to InitializeTurf to avoid confusion.
* Subsumed /area/proc/initialize into /atom/proc/initialize() - Made /area's LateInitialize to get same behavior as before.

code/modules/turbolift/turbolift_map.dm

@@ -23,7 +23,7 @@
 	..()
 
 /obj/turbolift_map_holder/initialize()
-
+	. = ..()
 	// Create our system controller.
 	var/datum/turbolift/lift = new()