* vue css and js loaded from layout.html.twig
* rename 'show' template to 'edit' template
* overwrite js block for 'edit' template (load all component, not only banner)
Two new routes:
* `GET /{_locale}/person/api/1.0/accompanying-course/{parcours_id}/show.json`: get a json representation for a course
* `POST /{_locale}/person/api/1.0/accompanying-course/{parcours_id}/participation.json`:
add a particitipation to course. Usage:
`curl -v --cookie "PHPSESSID=fed98aa23e40cb36e630f84155aea3bb;" -X
POST --data '{ "id": 481 }'
http://localhost:8001/fr/person/api/1.0/accompanying-course/270/participation.json`
Will add the person with id "481" to the course.