[READY]Makes a bunch of processes subsystems instead (#5814

* Converts various New() definitions to Initialization()
* Adds absolute pathing

code/datums/datum.dm

@@ -30,5 +30,5 @@
 
 	weakref = null // Clear this reference to ensure it's kept for as brief duration as possible.
 	tag = null
-	GLOB.nanomanager.close_uis(src)
+	SSnanoui.close_uis(src)
 	return QDEL_HINT_QUEUE