Fix Folder rename in WebDAV

When a folder is renamed via WebDAV, only the document name is changed whereas the document title should also be updated.

Steps to reproduce in Windows 10

1. Map a WebDAV drive to Nuxeo http://localhost:8080/nuxeo/site/dav with Administrator/Administrator credentials
2. Go to Administrator folder
3. Create a new folder with Windows right-click and keep the default name (New Folder)
4. Hit the F2 key and change the folder name
5. Now log in to Nuxeo Platform and observe that the document title is still New Folder. Looking at the document URL, observe that the document name/path has been correctly updated

This bug was reproduced on 9.10 HF24 and 10.3