Badger should fail gracefully if auth_groups hasn't been populated

Let's say you've just installed symposion for the first time, and
you're running the intial `./manage.py migrate`

In that circumstance, there isn't an auth_group table. Naturally this
means you get Some Errors when trying to look for a particular group.

This change handles that error and drives on.

vendor/registrasion/registrasion/contrib/badger.py

@@ -25,6 +25,7 @@ import pdb
 from django.core.management.base import BaseCommand
 
 from django.contrib.auth.models import User, Group
+from django.db.utils import OperationalError
 from pinaxcon.registrasion.models import AttendeeProfile
 from registrasion.controllers.cart import CartController
 from registrasion.controllers.invoice import InvoiceController
@@ -124,8 +125,13 @@ def set_colour(soup, slice_id, colour):
     style = elem.get('style')
     elem.set('style', style.replace('fill:#316a9a', 'fill:#%s' % colour))
 
-Volunteers = Group.objects.filter(name='Conference volunteers').first().user_set.all()
-Organisers = Group.objects.filter(name='Conference organisers').first().user_set.all()
+## It's possible that this script will be run before the database has been populated
+try:
+    Volunteers = Group.objects.filter(name='Conference volunteers').first().user_set.all()
+    Organisers = Group.objects.filter(name='Conference organisers').first().user_set.all()
+except (OperationalError, AttributeError):
+    Volunteers = []
+    Organisers = []
 
 def is_volunteer(attendee):
     '''