expand {user} to user of list when creating default lists, #1879

pandora/user/views.py

@@ -167,6 +167,10 @@ def signup(request):
                 for key in ('query', 'public', 'featured'):
                     if key in l:
                         setattr(list, key, l[key])
+                        if key == 'query':
+                            for c in list.query['conditions']:
+                                if c['key'] == 'user':
+                                    c['value'] = c['value'].format(user=user.username)
                 list.save()
                 pos = models.Position(list=list, section='personal', user=user)
                 qs = models.Position.objects.filter(user=user, section='personal')