-Changed the powernet nodes list to be a dictionary list (associative list, hashtable, etc..)

-Added a solars_list. The sun will use this list instead of the machines list. I made a proc which decided on whether to use this list or the powernet nodes list depending on what is smallest. I replaced some loops to use this proc.
-The sun will reference this list for debugging purposes. The sun will also remove solar equipment in the list which are not connected to a powernet.
-Cut down on some duplicated code.
-Fixed an issue with solar panels not updating their direction correctly.
-Changed the proc updateicon()'s name to update_icon()

git-svn-id: http://tgstation13.googlecode.com/svn/trunk@5418 316c924e-a436-60f5-8080-3fe189b3f50e

code/game/gamemodes/events/ninja_equipment.dm

@@ -976,7 +976,7 @@ ________________________________________________________________________________
 					flick("apc-spark", src)
 					A.emagged = 1
 					A.locked = 0
-					A.updateicon()
+					A.update_icon()
 			else
 				U << "\red This APC has run dry of power. You must find another source."