Fixed redirects to work consistently
Revision 1133 broke 'Edit Site Settings' by relying on the
fact that the url for create pages is '<entity>/create', which
it is not for 'Edit Site Settings'.
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>blank_page</title>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<script type="text/javascript">
parent.TemplateDialog.loadCSSFiles(document);
</script>
</head>
<body id="mceTemplatePreview" class="mceContentBody">
</body>
</html>