Added ordering to Session.constratints() to make page renderings stable.

 - Legacy-Id: 18727

Author: levkowetz

ietf/meeting/models.py

@@ -1121,7 +1121,7 @@ def docname_token(self):
         return 'sess%s' % (string.ascii_lowercase[index])
 
     def constraints(self):
-        return Constraint.objects.filter(source=self.group, meeting=self.meeting).order_by('name__name').prefetch_related("source","target","person")
+        return Constraint.objects.filter(source=self.group, meeting=self.meeting).order_by('name__name', 'target__acronym').prefetch_related("source","target","person")
 
     def reverse_constraints(self):
         return Constraint.objects.filter(target=self.group, meeting=self.meeting).order_by('name__name')