Added Energy Watcher API

Added Event to Recalculate Channel Requirements for a Node.
Level Emitter can now output redstone based on network energy levels.
Level Emitter's entry field can now hold longs ( text box supports up o trillions )

core/localization/ButtonToolTips.java

@@ -30,7 +30,9 @@ public enum ButtonToolTips
 
 	MoveWhenEmpty, MoveWhenWorkIsDone, MoveWhenFull, Disabled, Enable,
 
-	Blocking, NonBlocking, Craft, DontCraft;
+	Blocking, NonBlocking, Craft, DontCraft,
+
+	LevelType, LevelType_Energy, LevelType_Item;
 
 	String root;