message: Calculate max_time too
diff: @@ -217,7 +217,8 @@ fn make_block_stats_impl(
  key_root,
  name,
  total(tezedge_time),
  - count(tezedge_time)
  + count(tezedge_time),
  + max(tezedge_time)
  FROM
  actions
  WHERE
  @@ -245,6 +246,7 @@ fn make_block_stats_impl(
  let total: f64 = row.get(2)?;
  let count: usize = row.get(3)?;
  + let max_time: f64 = row.get(4)?;
  let entry = match map.get_mut(root) {
  Some(entry) => entry,
  @@ -268,6 +270,7 @@ fn make_block_stats_impl(
  entry.data.actions_count += count;
  entry.data.total_time += total;
  + entry.data.max_time = entry.data.max_time.max(max_time);
  }
  for action in map.values_mut() {
  