* Replaced ActivityIndicator for WPF to use a Windows style progress ring (animated dots).
* Removed private keyword
* Changed foreground color assignment so that Color.Default sets value to Color.Accent to avoid creating a transparent control.
* [WPF] Add WpfLightToolkit in the Xamarin Forms Wpf projet
* Delete WpfLightToolkit dependency
* [WPF] Add WpfLightToolkit in the Xamarin Forms Wpf projet
* Delete WpfLightToolkit dependency