Merge pull request #264 from fabienrohrer/master

Added slots to the robot to customize it easily
Merge pull request #265 from fabienrohrer/master

Resolved the motor limit warnings by clamping the commands.
Merge pull request #266 from fabienrohrer/master

Updated wbproj with the new version of Webots
Merge pull request #267 from fabienrohrer/master

Fixed typo
Merge pull request #268 from fabienrohrer/master

Improved management of min/max positions