- Add BusStationDetails.xaml

- use App.RecursiveBack to workaround problem of circular navigation: MainPage => AddBus => AddBusStation => MainPage
- Change Application Icon
- Rename App Name to "台北巴士快速磚"
- Add ContextMenu in MainPage
- Can edit Tag in BusStationDetails.xaml
- Add timeToArrive in BusTag