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/mob/new_player/login.dm

@@ -19,6 +19,7 @@ var/obj/effect/lobby_image = new /obj/effect/lobby_image
 		icon_state = pick(using_map.lobby_screens)
 	else
 		icon_state = known_icon_states[1]
+	. = ..()
 
 /mob/new_player
 	var/client/my_client // Need to keep track of this ourselves, since by the time Logout() is called the client has already been nulled