[1.8.x] Documented auth's login/logout function parameters.

If you have an authenticated user you want to attach to the current session

- this is done with a :func:`~django.contrib.auth.login` function.

.. function:: login()

.. function:: login(request, user)

    To log a user in, from a view, use :func:`~django.contrib.auth.login()`. It

    takes an :class:`~django.http.HttpRequest` object and a

How to log a user out

---------------------

.. function:: logout()

.. function:: logout(request)

    To log out a user who has been logged in via

    :func:`django.contrib.auth.login()`, use