module doesn't export lists and allows for unprivileged downloading of lists

I found and fixed few problems:
first - the module didn't generate any list, and secondly - the link to download the export is available to unprivileged users.

First problem:
easy to fix - just go over the queries in the module. Some of them miss the curly brackets which help drupal to prefix the tables in the queries. Just add them around the table names, and the list will be available.

Second problem:
there is a wrong 'access' definition in the hook_menu function, that permits downloading to users with the 'access users profile' privilege. Just change that to 'administer users' and the security improves at once (more of a privacy matter than a security one actually).