add buttons for bar grasp/retract
add buttons for bar grasp/retract

gizatt/director,empireryan/director,gizatt/director,mitdrc/director,patmarion/director,edowson/director,RobotLocomotion/director,patmarion/director,RussTedrake/director,RussTedrake/director,mithrandir123/director,mithrandir123/director,gizatt/director,manuelli/director,RussTedrake/director,manuelli/director,openhumanoids/director,rdeits/director,manuelli/director,empireryan/director,manuelli/director,gizatt/director,empireryan/director,rdeits/director,mitdrc/director,mithrandir123/director,manuelli/director,mithrandir123/director,RobotLocomotion/director,openhumanoids/director,edowson/director,rdeits/director,RussTedrake/director,edowson/director,RobotLocomotion/director,edowson/director,empireryan/director,mitdrc/director,edowson/director,RussTedrake/director,openhumanoids/director,patmarion/director,patmarion/director,rdeits/director,openhumanoids/director,mitdrc/director,openhumanoids/director,rdeits/director,empireryan/director,gizatt/director,patmarion/director,RobotLocomotion/director,mitdrc/director,mithrandir123/director,RobotLocomotion/director