Implement #45, add a who's online feature for the forums. Created middleware that caches usernames and guest session ids in the cache. Added a tag that displays this info.

<div class="smiley_farm">
{% for s in smilies %}
<img src="{{ s.image.url }}" alt="{{ s.code }}" title="{{ s.title }} {{ s.code }}" />
{% endfor %}
</div>