Updated to work with build 399948.

Power consumed sensor removed as that exists in the vanilla game.
Power produced graphics changed to use the same as the vanilla consumed sensor.

As pointed out by Major Dom the heavy cables now support 50kW so the mod has been updated with his in mind.

Maximum is now 50kW rather than 20kW.

Fixed a problem where power generated would switch between -1 and 0.

Changed the tint on the two sensors slightly do make them visually different from each other.