Display the latest picture at the top right of LiveviewScreen
Open photo chooser
Merge branch 'master' of github.com:kazyx/WPPMM
Fix some bugs
Merge branch 'master' of github.com:kazyx/WPPMM

Conflicts:
	WPPMM/PhoneApp/CameraManager/CameraManager.cs
	WPPMM/PhoneApp/Pages/MainPage.xaml
	WPPMM/PhoneApp/Pages/MainPage.xaml.cs