Utilize select_related() for user & user profiles. This commit also removes the caching of the avatar URL in the avatar template tag. This is because we are now using select_related, so we already have the profile & avatar when we get to the tag. Thus we don't need to waste time querying the cache. Removed an apparently unused member map template as well.

"""
pick_potd is a custom manage.py command for the POTD application.
Calling it will pick a new POTD.

"""
from django.core.management.base import NoArgsCommand

from potd.tools import pick_potd


class Command(NoArgsCommand):
    help = "Chooses the next POTD."

    def handle_noargs(self, **options):
        pick_potd()