Change users_list.html.php to list.html.php.
Place 'logout' and 'view site' buttons on header.

Yep, logout is working from the button on the header of
the page, and there is also a link to view the front-end
website, which will be set according to each case and
each client.

IMPORTANT: This template relies on html 5, and therefore,
does not work on IE < 9. Should probably create an alternate
template with the (very) good and old html 4 strict,
and also try html5shiv.