Change the config rules for view constraints.

We are changing the way the config is done for the view, it had been required to set "controller": "none" if you did not want a controller, and it would default to try to find the controller if you did not specify one, now if you do not want a controller you will not set it, and you will have to set it if you have a controller for the view.  I have also updated the tests.
Another change was made to deactivate selectedChildren, removing the hard coded "center" constraint in the Transition controller.