message: Display task name in the tooltip of the time entry block in the timeline view (win)
diff: <TextBlock Foreground="{Binding Color, Converter={StaticResource AdaptProjectTextColorConverter}}"
  Text="{Binding ProjectName}" FontSize="12"
  VerticalAlignment="Center"/>
  + <TextBlock Foreground="{Binding Color, Converter={StaticResource AdaptProjectTextColorConverter}}"
  + Padding="4 0 0 0"
  + Text="{Binding TaskName, Converter={StaticResource StringFormatIfNotEmptyConverter}, ConverterParameter='- {0}'}"
  + FontSize="12"
  + Visibility="{Binding TaskName, Converter={StaticResource EmptyStringToCollapsedConverter}}"/>
  </DockPanel>
  <TextBlock Grid.Row="3" Grid.Column="0" Text="{Binding ClientName}" Style="{StaticResource Toggl.CaptionText}"/>
  <StackPanel Orientation="Horizontal" Grid.Row="4" Grid.Column="0">
  