Invert drive direction

[isabellebowdey]

We want to invert the drive train - the cameras will invert with it. We've put in on the robot controls sheet but need to implement it in the code. We have the function but we need to change the joystick buttons and invert cameras. Design note

Implement function in robot container driven from the buttons. Function will call functions in drive train to invert directions, and functions in camera code to swap the camera views.

(Controls are A for reverse and B for forward on the drive controller).

[isabellebowdey]

We tested on the simulator.