message: Add close button padding, add action button horizontal padding (win)
diff: <UserControl.Resources>
  <converters:StringToUpperConverter x:Key="StringToUpperConverter" />
  <Style TargetType="Button" x:Key="CloseButtonStyle">
  - <Setter Property="Height" Value="20" />
  - <Setter Property="Width" Value="20" />
  - <Setter Property="Padding" Value="0" />
  + <Setter Property="Height" Value="30" />
  + <Setter Property="Width" Value="30" />
  + <Setter Property="Padding" Value="6" />
  + <Setter Property="Margin" Value="0" />
  <Setter Property="Background" Value="Transparent" />
  <Setter Property="Template">
  <Setter.Value>
  FontSize="12"
  HorizontalAlignment="Center"
  VerticalAlignment="Center"
  - Padding="12"
  + Padding="20 12"
  Margin="16 8 16 16"
  Click="ButtonBase_OnClick">
  <Button.Style>
  