Inverted Toggle buses no longer drain power.

parts/misc/PartInvertedToggleBus.java

@@ -7,6 +7,8 @@ public class PartInvertedToggleBus extends PartToggleBus
 
 	public PartInvertedToggleBus(ItemStack is) {
 		super( PartInvertedToggleBus.class, is );
+		proxy.setIdlePowerUsage( 0.0 );
+		outerProxy.setIdlePowerUsage( 0.0 );
 		proxy.setFlags();
 		outerProxy.setFlags();
 	}