Added a custom tag to display a link to a profile. Refactored the avatar tag to optionally display a profile link around the image. Removed the width and height attributes from the avatar image tag. I think this was causing disk hits whenever those properties were not cached. The avatar tag is now an inclusion tag.

{% extends "admin/change_list.html" %}
{% block object-tools %}
{% if has_add_permission %}
<ul class="object-tools"><li><a href="add/{% if is_popup %}?_popup=1{% endif %}" class="addlink">Add {{ name }}</a></li>
<li><a href="google_sync/">Google Sync</a></li>
</ul>
{% endif %}
{% endblock %}