Merge pull request #2 from xnoumbis/master

Start Discussion about latest changes on clients filtering based on club, and testing
Merge pull request #3 from xnoumbis/master

Last Changes: Client are queried based on the club selected by the user
rename misleading variable name
deduplicate client list
Merge branch 'master' of https://github.com/patricklam/judodb-backend
add a 'clubs' array to clients
add affiliation_ecole field for db
rename fields again
This fixes issue 29 from https://github.com/patricklam/JudoDB:

This php only currently checks that the user is logged in;
it needs to check that the logged-in user has access to the
client being requested (must have a services entry with a
club_id that intersects the logged in user and the user_club table).
	modified:   pull_one_client.php