I changed explorer page ui.
Merge branch 'master' into rfrost
indicator png
path_back png
I applied explorer page ui.
Merge branch 'master' into rfrost
I completed explorer page ui.
Fixing each storage login logics
Merge branch 'master' into hongkun

Conflicts:
	PintheCloud/Managers/GoogleDriveManager.cs
	PintheCloud/Managers/OneDriveManager.cs
	PintheCloud/Pages/ExplorerPage.xaml.cs
finished fixing login cancel bug
fixed signin logic
Merge branch 'master' of https://github.com/hongkunyoo/pin_the_cloud
Merge branch 'master' into rfrost
I arranged logic.
I arranged geo helper.