[GSOC] Extend support for Document Management Systems, progress update

[Cao Cuong Ngo]

Hi all,

This is a short summary of what I have done until now:

- Finished Google Drive implementation, actually it was finished in May.
- Properties dialog:
    + Created the dialog UI.
    + Created the UNO interface for CMIS property type.
    + Fetched the CMIS properties to the dialog.
    + Editing of the properties ( not yet finished ).

Things I'm doing now include:
- Convert the properties dialog to .ui format.
- Fix UI problems.
- Fix multiple values display of the properties.
- Enable update properties.

Regards,
Cuong.