Moar changes for new client view mockup:
* add client object to ActionPlansController
* redirect to client view after updating ActionPlansController.
* redirect to client view after updating GoalsController.
* redirect to client view after updating StepsController.
* add helper for goal_counter so that it starts counting from
  one rather than zero.
* refactor action plans listed in client view into a partial.
* give the client partial the proper .erb extenstion, DOH!!!
* create a partial for the client sidebar.
* refactor goal partial for client view mockup.
* refactor step partial for client view mockup.