empty banned icon on unbanned user
update ban/unban to use $uid instead of $username, add some _log()
fix displaying error string on ban/unban
add report banned users page
change logger print string on auth_validate_login() auth_validate_email() and auth_validate_token(), add check banned users on auth_validate_token()
remove login session and user_banned_add(), put more error strings
update user sessions and user banned