Addressed various unicode related issues.

Note this is using recent changes from text_filter library.

modules/admin/handler/user/cms_admin_users_handler.e

@@ -106,7 +106,7 @@ feature -- HTTP Methods
 						s.append ("<a href=%"")
 						s.append (req.absolute_script_url ("/admin/user/"+u.id.out))
 						s.append ("%">")
-						s.append (u.name)
+						s.append (html_encoded (u.name))
 						s.append ("</a>")
 						s.append ("</li>%N")
 					end