Add referrer: never meta tag

adminer/include/design.inc.php

@@ -21,6 +21,7 @@ function page_header($title, $error = "", $breadcrumb = array(), $title2 = "") {
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
 <meta http-equiv="Content-Script-Type" content="text/javascript">
 <meta name="robots" content="noindex">
+<meta name="referrer" content="never">
 <title><?php echo $title_page; ?></title>
 <link rel="stylesheet" type="text/css" href="../adminer/static/default.css">
 <script type="text/javascript" src="../adminer/static/functions.js"></script>

changes.txt

@@ -11,6 +11,7 @@ Report offline and other AJAX errors (bug #419)
 Don't alter table comment if not changed
 Add links to documentation on table status page
 Fix handling of 64 bit numbers in auto_increment
+Add referrer: never meta tag
 MySQL: Use utf8mb4 if available
 MySQL: Support foreign keys in NDB storage
 PostgreSQL: Materialized views