Changed check for has_ball() to use physical ball sensor. Also modified role requirements to use robots nearest to kick line.
Changed check for has_ball() to use physical ball sensor. Also modified role requirements to use robots nearest to kick line.

RoboJackets/robocup-software,RoboJackets/robocup-software,JNeiger/robocup-software,RoboJackets/robocup-software,JNeiger/robocup-software,RoboJackets/robocup-software,JNeiger/robocup-software,JNeiger/robocup-software,JNeiger/robocup-software