Applying patch from 'ruben' updates Date header to comply with RFC 82…

…2 and RFC 1123. Fixes #6102

git-svn-id: https://svn.cakephp.org/repo/branches/1.2.x.x@8035 3807eeeb-6ff5-0310-8944-8be069107fe0

app/webroot/css.php

@@ -95,7 +95,7 @@ function write_css_cache($path, $content) {
 
 	header("Date: " . date("D, j M Y G:i:s ", $templateModified) . 'GMT');
 	header("Content-Type: text/css");
-	header("Expires: " . gmdate("D, j M Y H:i:s", time() + DAY) . " GMT");
+	header("Expires: " . gmdate("D, d M Y H:i:s", time() + DAY) . " GMT");
 	header("Cache-Control: max-age=86400, must-revalidate"); // HTTP/1.1
 	header("Pragma: cache");        // HTTP/1.0
 	print $output;