Created stats for users (number of users and list of newest users). Better separated the forums, who's online, and user stats. Use a Celery task to execute the new user stats processing. This addresses #194 and #238.

{% 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 %}