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.

"""
URLs for the POTD application.
"""
from django.conf.urls.defaults import *

urlpatterns = patterns('potd.views',
    url(r'^$', 'view', name='potd-view'),
    url(r'^archive/(\d+)/$', 'archive', name='potd-archive'),
)