Fixed #25229 -- Clarified how an iterable works with @permission_required

    (i.e. ``polls.can_vote`` for a permission on a model in the ``polls``

    application).

    The decorator may also take an iterable of permissions.

    The decorator may also take an iterable of permissions, in which case the

    user must have all of the permissions in order to access the view.

    Note that :func:`~django.contrib.auth.decorators.permission_required()`

    also takes an optional ``login_url`` parameter::