Save and restore order of rows in local or remote storage after Drag n Drop operation

This is done by:

• Assign unique id to every row. In this example we have OrderID field which is unique for every row.
• Serialize array of unique id of rows in moveNode event. Note that moveNode event is fired after every Drag n Drop operation.
• Save the serialized data to local or remote storage
• Restore the order of rows in dataModel.getData callback in case of local storage.
• Restore the order of rows at remote server itself in case of remote storage.

To check working of this demo, drag n drop couple of rows and reload this example.