Folder information update

[jdizoglio]

The folder item information is not being updated as the contents of the folder changes.

1. Create a folder, i.e. 'Test Folder'
2. Nav into the folder and 'Add a file' from a box app or upload via the web
3. Pull to refresh the folder. You will see the item
4. Nav back to the parent folder. The information still show folder is empty.
5. PTR, the folder is still show as empty. Requires and app restart to show the correct folder information.

We should update the information after each network request.