ChartView: Add support for axes rendering, when no data is available

As a workaround add a series with one point and set its color to transparent.

<telerik:ScatterLineSeries XValueBinding="."
                  YValueBinding="."
                  Stroke="Transparent">
    <telerik:ScatterLineSeries.ItemsSource>
        <x:Array Type="system:Int32">
            <system:Int32>0</system:Int32>
        </x:Array>
    </telerik:ScatterLineSeries.ItemsSource>
</telerik:ScatterLineSeries>