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.

<div id="comment-container">
{% for comment in comments %}
{% include 'comments/comment.html' %}
{% endfor %}
</div>