Fixed #25169 -- Documented stacking of permission_required and login_required.

    (HTTP Forbidden) view<http_forbidden_view>` instead of redirecting to the

    login page.

    If you want to use ``raise_exception`` but also give your users a chance to

    login first, you can add the

    :func:`~django.contrib.auth.decorators.login_required` decorator::

        from django.contrib.auth.decorators import login_required, permission_required

        @permission_required('polls.can_vote', raise_exception=True)

        @login_required

        def my_view(request):

            ...

    .. versionchanged:: 1.9

        In older versions, the ``permission`` parameter only worked with