Setting up a robot

Adopted Carina's work with @doudou's comments. Could not resolve everything, but at least her effort is not in vain...
 - you can't create bundles anywhere, only in the BUNDLES_PATH. In practice, it means bundles/
 - the name of the bundle is the basename of the directory (should be mentioned)
 - need to use same name for rock-create-bundle and rock-bundle-default to avoid confusions