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.

{% load url from future %}
{% load markup %}
{% load smiley_tags %}
{% load bio_tags %}
{% avatar user 0 "left" %}{% profile_link user.username %}:<br />{{ msg|safe }}