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/controllers/master_controller.dm

@@ -42,16 +42,16 @@ datum/controller/game_controller/proc/setup()
 	transfer_controller = new
 	admin_notice("<span class='danger'>Initializations complete.</span>", R_DEBUG)
 
-#if UNIT_TEST
-#define CHECK_SLEEP_MASTER // For unit tests we don't care about a smooth lobby screen experience. We care about speed.
-#else
-#define CHECK_SLEEP_MASTER if(++initialized_objects > 500) { initialized_objects=0;sleep(world.tick_lag); }
-#endif
+// #if UNIT_TEST
+// #define CHECK_SLEEP_MASTER // For unit tests we don't care about a smooth lobby screen experience. We care about speed.
+// #else
+// #define CHECK_SLEEP_MASTER if(++initialized_objects > 500) { initialized_objects=0;sleep(world.tick_lag); }
+// #endif
 
 datum/controller/game_controller/proc/setup_objects()
-	#if !UNIT_TEST
-	var/initialized_objects = 0
-	#endif
+	// #if !UNIT_TEST
+	// var/initialized_objects = 0
+	// #endif
 
 	// Set up antagonists.
 	populate_antag_type_list()