message: Use metric name instead of metric in filter box
diff: @@ -1825,7 +1825,10 @@ class FilterBoxViz(BaseViz):
  metric = flt.get('metric')
  df = self.dataframes.get(col)
  if metric:
  - df = df.sort_values(metric, ascending=flt.get('asc'))
  + df = df.sort_values(
  + utils.get_metric_name(metric),
  + ascending=flt.get('asc'),
  + )
  d[col] = [{
  'id': row[0],
  'text': row[0],
  