Merge pull request #92 from sh1989/native-2.0

Native Android improvements
Xamarin Android: Removing redundant layout calls
Xamarin Android: Load more list row shows highlighted state.
Xamarin Android: Trimming search text input.
Xamarin Android: exposing application for a given context.
Xamarin - Moving gitignore into xamarin dir
Xamarin Android: Favourites list updates when returned to.
Xamarin Common: A reboot to the favourites view will cause multiple event subscriptions. Stop this behaviour.