Takes an optional number and destination (by id) and returns a list of links for the given linkroll.
    Given a number, return list limited to the given number.
    Given a destination slug, limit linkrolls to the matching destination.
    Usage:
        {% get_linkroll_details some_slug %}
        {% get_linkroll_details some_slug 5 %}

def get_linkroll_details(destination_slug, num='All', *args, **kwargs):
    """
    Takes an optional number and destination (by id) and returns a list of links for the given linkroll.
    Given a number, return list limited to the given number.
    Given a destination slug, limit linkrolls to the matching destination.
    Usage:
        {% get_linkroll_details some_slug %}
        {% get_linkroll_details some_slug 5 %}
    """
    links = Link.objects.filter(destination__slug=destination_slug)
    if num:
        links = links[0:num]

    return {
        'link_list': links
    }