message: Fix date for gap entries
diff: @@ -268,6 +268,8 @@ namespace TogglDesktop.ViewModels
  var start = Toggl.DateTimeFromUnix(prevEnd.Value+1);
  var block = new TimeEntryBlock(TimelineConstants.ScaleModes[selectedScaleMode])
  {
  + Started = prevEnd.Value + 1,
  + Ended = entry.Started - 1,
  Height = ConvertTimeIntervalToHeight(start, Toggl.DateTimeFromUnix(entry.Started - 1), selectedScaleMode),
  VerticalOffset =
  ConvertTimeIntervalToHeight(new DateTime(start.Year, start.Month, start.Day), start, selectedScaleMode),
  @@ -401,7 +403,7 @@ namespace TogglDesktop.ViewModels
  private void AddNewTimeEntry()
  {
  - TimeEntryId = Toggl.CreateEmptyTimeEntry((ulong)Started, (ulong)Ended);
  + TimeEntryId = Toggl.CreateEmptyTimeEntry(Started, Ended);
  OpenEditView.Execute().Subscribe();
  }
  