Added missing vars to AdminSite.each_context() docs.
@@ -2830,6 +2830,9 @@ Templates can override or extend base admin templates as described in
* ``admin_url``: admin changelist URL for the model
* ``add_url``: admin URL to add a new model instance
+ * ``is_popup``: whether the current page is displayed in a popup window
+ * ``is_nav_sidebar_enabled``: :attr:`AdminSite.enable_nav_sidebar`
+
.. method:: AdminSite.get_app_list(request, app_label=None)
Returns a list of applications from the :doc:`application registry
