Scheduler, observation, and New() tweaks.

Corrects a number of places where New() did not call ..(), and implements similar changes to attempt to ensure New()/initialize() complete running before qdel() runs.
Cuts down on the number of created items during server start.

code/game/objects/random/random.dm

@@ -11,9 +11,11 @@
 	..()
 	if (!prob(spawn_nothing_percentage))
 		spawn_item()
+		
+/obj/random/initialize()
+	..()
 	qdel(src)
 
-
 // this function should return a specific item to spawn
 /obj/random/proc/item_to_spawn()
 	return 0