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/ATMOSPHERICS/components/binary_devices/dp_vent_pump.dm

@@ -194,7 +194,7 @@
 	return 1
 
 /obj/machinery/atmospherics/binary/dp_vent_pump/initialize()
-	..()
+	. = ..()
 	if(frequency)
 		set_frequency(frequency)
 

code/ATMOSPHERICS/components/binary_devices/passive_gate.dm

@@ -128,7 +128,7 @@
 	return 1
 
 /obj/machinery/atmospherics/binary/passive_gate/initialize()
-	..()
+	. = ..()
 	if(frequency)
 		set_frequency(frequency)
 

code/ATMOSPHERICS/components/binary_devices/pump.dm

@@ -148,7 +148,7 @@ Thus, the two variables affect pump operation are set in New():
 		ui.set_auto_update(1)		// auto update every Master Controller tick
 
 /obj/machinery/atmospherics/binary/pump/initialize()
-	..()
+	. = ..()
 	if(frequency)
 		set_frequency(frequency)
 

code/ATMOSPHERICS/components/trinary_devices/filter.dm

@@ -129,8 +129,9 @@
 	return 1
 
 /obj/machinery/atmospherics/trinary/atmos_filter/initialize()
-	set_frequency(frequency)
-	..()
+	. = ..()
+	if(frequency)
+		set_frequency(frequency)
 
 /obj/machinery/atmospherics/trinary/atmos_filter/attackby(var/obj/item/weapon/W as obj, var/mob/user as mob)
 	if (!istype(W, /obj/item/weapon/wrench))

code/ATMOSPHERICS/components/tvalve.dm

@@ -318,7 +318,7 @@
 
 
 /obj/machinery/atmospherics/tvalve/digital/initialize()
-	..()
+	. = ..()
 	if(frequency)
 		set_frequency(frequency)
 
@@ -458,7 +458,7 @@
 		radio_connection = radio_controller.add_object(src, frequency, RADIO_ATMOSIA)
 
 /obj/machinery/atmospherics/tvalve/mirrored/digital/initialize()
-	..()
+	. = ..()
 	if(frequency)
 		set_frequency(frequency)
 

code/ATMOSPHERICS/components/unary/outlet_injector.dm

@@ -123,9 +123,9 @@
 	return 1
 
 /obj/machinery/atmospherics/unary/outlet_injector/initialize()
-	..()
-
-	set_frequency(frequency)
+	. = ..()
+	if(frequency)
+		set_frequency(frequency)
 
 /obj/machinery/atmospherics/unary/outlet_injector/receive_signal(datum/signal/signal)
 	if(!signal.data["tag"] || (signal.data["tag"] != id) || (signal.data["sigtype"]!="command"))

code/ATMOSPHERICS/components/valve.dm

@@ -266,7 +266,7 @@
 		radio_connection = radio_controller.add_object(src, frequency, RADIO_ATMOSIA)
 
 /obj/machinery/atmospherics/valve/digital/initialize()
-	..()
+	. = ..()
 	if(frequency)
 		set_frequency(frequency)