Kinetic migration

See merge request !8

Tested the walk, action, head and joints clients and modules in simulation.
The all_clients simulation launch is working.

Removed the smart charger and feet contacts modules.

Removed the inline modifiers because they are no longer needed.

Changed the codification of the roll and pitch shift parameters of the stairs algorithm in simulation.

Added a launch for the stairs client for the real robot.

Added the services to get and set the stairs parameters and the action to control its execution.

Implemented the topic publishers with IR sensor feet data.

Added a control parameter file for the Darwin robot used for the CEABOT competition.

Added a new robot for the CEABOT competition.

Added a service to get the stairs algorithm parameters.
Added an action to climb stairs.

Merge branch 'smart_charger_ros' of https://gitlab.iri.upc.edu/humanoides/darwin_robot into smart_charger_ros

Removed the rqt_reconfigure launch from the action client.

Added the functions to the simulated robot for the enable and disable power to the second Dynamixel bus.