change account system
change currentIndex logic
before change MobileService model
after add local Explorer before changing PinPage and so on
changing Basic UI
dropbox not working stage
before merging master / hell gate opening
Merge branch 'master' into hongkun

Conflicts:
	PintheCloud/App.xaml.cs
	PintheCloud/Pages/ExplorerPage.xaml.cs
	PintheCloud/Pages/PtcPage.cs
	PintheCloud/Pages/SettingsPage.xaml.cs
redesign