Calibrate the front limelight pitch and yaw angles on the comp robot

[muscatd75]

1. Position robot so that the cross hair is centered on an April tag
2. Using a measuring tape, measure the horizontal distance (HD) from the April tag to the limelight
3. The yaw angle of the limelight is arctan(HD/(LLH-ATH)), where LLH is the limelight height, ATH is the April tag height
4. Set this value in practicebot.xml -> yaw="x.x" where x.x is the calculated angle
5. Set the pitch angle in practicebot.xml to -1*verticalAngle, where verticalAngle is read from the limelight network table