Change badge_awarded signal to use intern()'d strings instead of Badge instances, which never return the same id().

badges/models.py

@@ -54,7 +54,7 @@ class Award(models.Model):
 
     def save(self, *args, **kwargs):
         super(Award, self).save(*args, **kwargs)
-        api.badge_awarded.send_robust(sender=self.badge, award=self)
+        api.badge_awarded.send_robust(sender=intern(str(self.badge.slug)), award=self)
         notification.send([self.user], "badge_awarded", {"award": self})
 
     def __unicode__(self):

badges/tests.py

@@ -40,6 +40,6 @@ class APITest(unittest.TestCase):
 
     def testSingleSignal(self):
         api.create_badge("test_badge", "Test Badge", "Test Desc")
-        api.badge_awarded.connect(self._gotAward, sender=api.find_badge("test_badge"))
+        api.badge_awarded.connect(self._gotAward, sender="test_badge")
         api.award(self.user, "test_badge", "reason")
         self.assertTrue(self.awarded)