Fixed a few presentation bugs in installer, made installer more "legally binding", and fixed global permissions inheritance in $session->fetch_page_acl()
echo '<p>The administrator has flagged the page "' . $_SERVER['REQUEST_URI'] . '" so that it cannot be accessed from the web. Perhaps this is because this is a cache or includes directory and only needs to be accessed by scripts.</p><p>HTTP error: 403 Forbidden</p>';