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 'base.html' %}
{% block custom_css %}
<link rel="stylesheet" type="text/css" href="{{ STATIC_URL }}css/bio.css" />
{% block bio_css %}{% endblock %}
{% endblock %}
{% block content %}
{% endblock %}