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 oembed application.
"""
from django.conf.urls.defaults import *

urlpatterns = patterns('oembed.views',
    url(r'^fetch/$', 'fetch_media', name='oembed-fetch_media'),
    url(r'^fetch_saved/$', 'fetch_saved_media', name='oembed-fetch_saved_media'),
)