message: Fix crash if there are no time entries
diff: @@ -52,9 +52,10 @@ namespace TogglDesktop.ViewModels
  Toggl.SetViewTimelineDay(Toggl.UnixFromDateTime(SelectedDate)); //called in case if user changed some of the selected date TEs
  if (_lastDateLoaded == default)
  {
  - _lastDateLoaded = Toggl.DateTimeFromUnix(timeEntries.Select(te => te.Started).Min());
  + _lastDateLoaded = timeEntries.Any()
  + ? Toggl.DateTimeFromUnix(timeEntries.Select(te => te.Started).Min())
  + : DateTime.Today;
  }
  -
  }
  private void ConvertChunksToActivityBlocks(List<Toggl.TimelineChunkView> chunks)
  