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/objects/items/devices/PDA/cart.dm

@@ -110,7 +110,7 @@ var/list/civilian_cartridges = list(
 
 /obj/item/weapon/cartridge/security/initialize()
 	radio = new /obj/item/radio/integrated/beepsky(src)
-	..()
+	. = ..()
 
 /obj/item/weapon/cartridge/detective
 	name = "\improper D.E.T.E.C.T. cartridge"
@@ -166,7 +166,7 @@ var/list/civilian_cartridges = list(
 
 /obj/item/weapon/cartridge/signal/initialize()
     radio = new /obj/item/radio/integrated/signal(src)
-    ..()
+    . = ..()
 
 /obj/item/weapon/cartridge/quartermaster
 	name = "\improper Space Parts & Space Vendors cartridge"
@@ -200,7 +200,7 @@ var/list/civilian_cartridges = list(
 
 /obj/item/weapon/cartridge/hos/initialize()
 	radio = new /obj/item/radio/integrated/beepsky(src)
-	..()
+	. = ..()
 
 /obj/item/weapon/cartridge/ce
 	name = "\improper Power-On DELUXE"
@@ -225,7 +225,7 @@ var/list/civilian_cartridges = list(
 
 /obj/item/weapon/cartridge/rd/initialize()
 	radio = new /obj/item/radio/integrated/signal(src)
-	..()
+	. = ..()
 
 /obj/item/weapon/cartridge/captain
 	name = "\improper Value-PAK cartridge"