Fuel Calculator Reset Button

Add a "fuel reset" button to reset the fuel calculator. So say you are in a SC caution for a few laps. Right before green you hit the reset fuel button (mapped to the wheel or button box) so when you cross the s/f line you get clean calculations from there on forward Right now when you do caution laps it messes with the AVG fuel calculation when you go back to green and start consuming more fuel. The Avg is staying low due to the caution laps mixed in which reports more fuel than you actually have in the tank.