DataGridRow template improvement

[Spaier]

Selecting a row doesn't change background of row, only cells. Adding IsSelected trigger to DataRow template will fix it.

<ControlTemplate.Triggers>
    <Trigger Property="IsMouseOver" Value="True">
        <Setter Property="Background" Value="{DynamicResource DataGridCellBackgroundHover}" />
    </Trigger>
    <Trigger Property="IsSelected" Value="True">
            <Setter Property="Background" Value="{DynamicResource DataGridCellBackgroundSelected}" />
    </Trigger>
</ControlTemplate.Triggers>