Refactor RateLimiter so that if Redis is not running, everything still runs normally (minus the rate limiting protection). My assumption that creating a Redis connection would throw an exception if Redis wasn't running was wrong. The exceptions actually occur when you issue a command. This is for #224.

{% load url from future %}
{% load markup %}
{% load smiley_tags %}
{% load avatar_tags %}
{% avatar user "left" %}<a href="{% url 'bio-view_profile' username=user.username %}">{{ user.username }}</a>:<br />{{ msg|safe }}