This includes:
* Copy user competencies to user_competency_plan when updating plan
with status complete.
* User competencies in user_competency_plan are deleted when the plan
is set back to draft or active.
* the api::list_plan_competencies method is now returning
user_competency_plan objects if plan status is complete.
* external functions and renderer have been adapted to the new api
methods.
* Remove fields status and reviewerid from user_competency_plan
Frederic Massart