*MainPage.xaml - AppBar not working added
*Common/TileManager.cs - moved method declaration

Signed-off-by: Daniel Pawłowski <danielpawlow@gmail.com>
*Common/ToastManager.cs - added class managing toasts

Signed-off-by: Daniel Pawłowski <danielpawlow@gmail.com>
*Added Toasts + capabilities
*Added working app bar 2 buttons


Signed-off-by: Daniel Pawłowski <danielpawlow@gmail.com>