message: Get duration format for Timeline (lib)
diff: @@ -882,6 +882,7 @@ void Context::updateUI(const UIElements &what) {
  view.Duration = toggl::Formatter::FormatDuration(
  view.DurationInSeconds,
  Formatter::DurationFormat);
  + view.DateDuration = Formatter::FormatDurationForDateHeader(view.DurationInSeconds);
  user_->related.ProjectLabelAndColorCode(
  te,
  &view);
  