Fixed #20126 -- XViewMiddleware moved to django.contrib.admindocs.middleware

tests/admin_docs/urls.py

@@ -0,0 +1,11 @@
+# coding: utf-8
+from __future__ import absolute_import
+
+from django.conf.urls import patterns
+
+from . import views
+
+urlpatterns = patterns('',
+    (r'^xview/func/$', views.xview_dec(views.xview)),
+    (r'^xview/class/$', views.xview_dec(views.XViewClass.as_view())),
+)