For bitbucket issue #2, tweak the admin settings for the Post model to reduce slow queries. Define our own queryset() method so we can control the select_related(), and not have it cascade from post to topics to forums to categories. Removed 'topic' from list_display because MySQL still sucked with 2 inner joins. Now it seems to be tolerable with only one join to User.

"""
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'),
)