Merge pull request #7 from ipa320/hydro_dev

updates from hydro_dev
blacklisted unsupported packages
added Chain classes
initial commit of ipa_canopen_chain_ros
moved datasheets to config
move prepare script to test
Chain call bug fix
added getElements
intitial commit of control node
added test yaml
c&p error
added updater
Merge pull request #8 from ipa-mdl/indigo_dev

Intitial version of ROS layer for indigo
Merge pull request #9 from ipa320/indigo_dev

Indigo dev