Multiple fixes in the pkgdb2pagure_acls.py script
    
    - Fix the SQL query used to extract the ACLs from pkgdb
    - Try turning off fedmsg notifications as well as turning the project
      to read-only
      (doesn't really work for some reason :s)
    - Do not make admin people that are no longer part of the project
      Since we migrated all the commits access, it means they lost access
      in the mean-while
    - When making people admin of a project, make them ignore the
      notifications
    
    Signed-off-by: Pierre-Yves Chibon <pingou@pingoured.fr>