Moved cyborg law-syncing back into New().

New Borgs now sync with the AI with the fewest associated borgs. So, say there were 3 AIs and 6 borgs, each would get two each.
Cyborg cells now default to 7500 (like the transform procs do), this is so admin-spawn borgs don't end up with 1500-charge cells with a max of 1000-charge.
Default lawset is asimov rather than an empty lawset
pulsing a borg's sync wire will cause it to randomly pick an AI.
As a borg, your laws are shown to you at login.

git-svn-id: http://tgstation13.googlecode.com/svn/trunk@4641 316c924e-a436-60f5-8080-3fe189b3f50e

code/game/machinery/computer/law.dm

@@ -40,7 +40,7 @@
 			usr << "The upload computer is broken!"
 			return
 
-		src.current = activeais()
+		src.current = select_active_ai(user)
 
 		if (!src.current)
 			usr << "No active AIs detected."