Add full support for syncing of changes made to the HierarchicalDataSource in a TreeView and Grid. Currently, sync() does not perform the correct sequence of CRUD operations that represent the changes made to the data source or control.

Currently there is now implementation to support Guid data types. There is a workaround to use parameter mapping but this is not working when using custom methods for read\update... methods. I am heavily using web.ai driven odata endpoints and therefore I need custom transport methods and I am not able to filter Guids because auf these limitations.

Steps to Reproduce:

1. Login to My APP and navigate to the Asset List page.

2. Select an asset with multiple child videos.

3. Click the collapse button to expand and view child videos — works as expected.

4. Click the asset file name to navigate to the playback screen.

5. Click the "Go to Back" button to return to the Asset List.

6. Click the collapse button again — child videos do not appear.

7. Press F5 to refresh the page once.

8. Click the collapse button — functionality works normally again.
   
   kendo version :2014.2.1008