[1.7.x] Added RemoteUserMiddleware to middleware reference page.

Backport of 465980d070 from master

docs/howto/auth-remote-user.txt

@@ -27,19 +27,17 @@ use of the ``REMOTE_USER`` value using the ``RemoteUserMiddleware`` and
 Configuration
 =============
 
-.. class:: django.contrib.auth.middleware.RemoteUserMiddleware
-
 First, you must add the
 :class:`django.contrib.auth.middleware.RemoteUserMiddleware` to the
 :setting:`MIDDLEWARE_CLASSES` setting **after** the
 :class:`django.contrib.auth.middleware.AuthenticationMiddleware`::
 
     MIDDLEWARE_CLASSES = (
-        ...
+        '...',
         'django.contrib.auth.middleware.AuthenticationMiddleware',
         'django.contrib.auth.middleware.RemoteUserMiddleware',
-        ...
-        )
+        '...',
+    )
 
 Next, you must replace the :class:`~django.contrib.auth.backends.ModelBackend`
 with ``RemoteUserBackend`` in the :setting:`AUTHENTICATION_BACKENDS` setting::

docs/ref/middleware.txt

@@ -204,6 +204,11 @@ Adds the ``user`` attribute, representing the currently-logged-in user, to
 every incoming ``HttpRequest`` object. See :ref:`Authentication in Web requests
 <auth-web-requests>`.
 
+.. class:: RemoteUserMiddleware
+
+Middleware for utilizing Web server provided authentication. See
+:doc:`/howto/auth-remote-user` for usage details.
+
 .. class:: SessionAuthenticationMiddleware
 
 .. versionadded:: 1.7