message: use_slice_data in slice_json calls
diff: @@ -1105,7 +1105,7 @@ class Superset(BaseSupersetView):
  @expose('/slice_json/<slice_id>')
  def slice_json(self, slice_id):
  try:
  - form_data, slc = self.get_form_data(slice_id)
  + form_data, slc = self.get_form_data(slice_id, use_slice_data=True)
  datasource_type = slc.datasource.type
  datasource_id = slc.datasource.id
  