changing Spot jobs & before adding PDF dll
added StorageExplorer(Not Tested)
change SpotManager & SpotObject & StorageExplorer
keep adding SpotObject methods
before adding with master / commit for backup
Merge branch 'master' into hongkun

Conflicts:
	PintheCloud/Pages/AddFilePage.xaml.cs
	PintheCloud/Pages/ExplorerPage.xaml.cs
	PintheCloud/Pages/PinPage.cs
	PintheCloud/Pages/SplashPage.xaml.cs