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/game/machinery/embedded_controller/airlock_docking_controller_multi.dm

@@ -10,7 +10,7 @@
 	var/datum/computer/file/embedded_program/docking/multi/docking_program
 
 /obj/machinery/embedded_controller/radio/docking_port_multi/initialize()
-	..()
+	. = ..()
 	docking_program = new/datum/computer/file/embedded_program/docking/multi(src)
 	program = docking_program
 
@@ -56,7 +56,7 @@
 	tag_secure = 1
 
 /obj/machinery/embedded_controller/radio/airlock/docking_port_multi/initialize()
-	..()
+	. = ..()
 	airlock_program = new/datum/computer/file/embedded_program/airlock/multi_docking(src)
 	program = airlock_program