Resolves given named URL and returns the relevant breadcrumb label (if
    available). Usage::

        <a href="{% url project-detail project.slug %}">
            {% named_crumb project-detail project.slug %}
        </a>

def named_crumb(context, name, *args, **kwargs):
    """ Resolves given named URL and returns the relevant breadcrumb label (if
    available). Usage::

        <a href="{% url project-detail project.slug %}">
            {% named_crumb project-detail project.slug %}
        </a>

    """
    url = reverse(name, args=args, kwargs=kwargs)
    return find_crumb(context['request'], url)