[1.1.X] Removed example CSRF jQuery code from release notes, replacing with link to improved code in the CSRF docs

Backport of [15628] from trunk.

git-svn-id: http://code.djangoproject.com/svn/django/branches/releases/1.1.X@15630 bcc190cf-cafb-0310-a4f2-bffc1f526a37

docs/ref/contrib/csrf.txt

@@ -39,6 +39,8 @@ replaced instead of using ``CsrfMiddleware``.
     (previous versions of Django did not provide these two components
     of ``CsrfMiddleware`` as described above)
 
+.. _csrf-ajax:
+
 AJAX
 ----
 

docs/releases/1.1.4.txt

@@ -62,17 +62,7 @@ header X-CSRFTOKEN, as well as in the form submission itself, for ease
 of use with popular JavaScript toolkits which allow insertion of
 custom headers into all AJAX requests.
 
-The following example using the jQuery JavaScript toolkit demonstrates
-this; the call to jQuery's ajaxSetup will cause all AJAX requests to
-send back the CSRF token in the custom X-CSRFTOKEN header::
-
-    $.ajaxSetup({
-        beforeSend: function(xhr, settings) {
-            if (!(/^http:.*/.test(settings.url) || /^https:.*/.test(settings.url))) {
-                // Only send the token to relative URLs i.e. locally.
-                xhr.setRequestHeader("X-CSRFToken",
-                                     $("#csrfmiddlewaretoken").val());
-            }
-        }
-    });
-
+Please see the :ref:`CSRF docs for example jQuery code <csrf-ajax>`
+that demonstrates this technique, ensuring that you are looking at the
+documentation for your version of Django, as the exact code necessary
+is different for some older versions of Django.