{% for link in links %}
    <li>
        {% if link.link_type.symbol %}
            <span class="symbol">{{ link.link_type.symbol|safe }}</span> 
        {% else %}
            <img src="{{ link.link_type.image.url }}" style="margin-right:5px;margin-top:2px;" />
        {% endif %}
        &nbsp;<a href="{{ link.url }}" title="{{ link.title }}">{{ link.name }}</a>
    </li>
{% endfor %}