Ability to drag and drop a folder into another folder (or another storage)

[Rokt33r]

Specs

To same storage

1. Check the destination not the target folder's sub folders.(Prevent circular structure)
2. Calculate which folders and notes are needed to be moved.
3. Create folders to new destination.
4. Update folderPathname of the notes.
5. Delete the old folders.

To other storage

Almost same to To same storage specs. But we should ask if users want to copy or move the folder.

1. (Circular structure won't be happen in this case. So we don't need to check destination)
2. Calculate which folders and notes are needed to be moved.
3. Create folders to new destination.
4. Copy all notes to other storage with updated folderPathname prop
5. Delete the old folders if user choose moving

[kazup01]

Close it because it is already shipped.