Added tables 'club_cours' and 'club_configuration' to enable
the management of several clubs.

	modified:   db.sql

backend scripot to retrieve a user's accessible club list from the database.

	new file:   pull_club_list.php

Queries the course list of a specified club
	new file:   pull_club_cours.php
Merge branch 'master' of https://github.com/xnoumbis/judodb-backend