Added powerball tray
Merge branch 'groovy_dev' of github.com:ipa-cob3-5/cob_robots into groovy_dev
added canopenmaster config file
add tray sensors to cob3-5 and rename phidgets.yaml to tray_sensors.yaml
fix powerball launch file for tray
fix cob3-5 urdf for head
fix launch file
Merge pull request #91 from ipa-cob3-5/groovy_dev

cob3-5 updates