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/hydroponics/seed_packets.dm

@@ -13,10 +13,7 @@ var/global/list/plant_seed_sprites = list()
 
 /obj/item/seeds/initialize()
 	update_seed()
-	..()
-
-/obj/item/seeds/New()
-	..()
+	. = ..()
 
 //Grabs the appropriate seed datum from the global list.
 /obj/item/seeds/proc/update_seed()
@@ -79,7 +76,7 @@ var/global/list/plant_seed_sprites = list()
 /obj/item/seeds/random/initialize()
 	seed = plant_controller.create_random_seed()
 	seed_type = seed.name
-	update_seed()
+	. = ..()
 
 /obj/item/seeds/replicapod
 	seed_type = "diona"

code/modules/hydroponics/trays/tray.dm

@@ -165,16 +165,19 @@
 			nymph.visible_message("<font color='blue'><b>[nymph]</b> rolls around in [src] for a bit.</font>","<font color='blue'>You roll around in [src] for a bit.</font>")
 		return
 
-/obj/machinery/portable_atmospherics/hydroponics/New()
-	..()
+/obj/machinery/portable_atmospherics/hydroponics/initialize()
+	. = ..()
 	temp_chem_holder = new()
 	temp_chem_holder.create_reagents(10)
 	create_reagents(200)
 	if(mechanical)
 		connect()
 	update_icon()
+	return INITIALIZE_HINT_LATELOAD
 
-/obj/machinery/portable_atmospherics/hydroponics/initialize()
+// Give the seeds time to initialize itself
+/obj/machinery/portable_atmospherics/hydroponics/LateInitialize()
+	. = ..()
 	var/obj/item/seeds/S = locate() in loc
 	if(S)
 		plant_seeds(S)