[GSoC] Improve user experience with CMIS – Weekly report #2

[Szymon Kłos]

* I changed the PlaceEditDialog, now it shows only controls required by
the selected connection type.
* To my dialog I added widgets:
- SvtFileView showing directory contents
- input widget with current URL (in the future will be replaced with
breadcrumb)
- input field with selected file name
- listbox containing filters
- folder tree listbox
* User can resize tree listbox using the spinner

To do next:
* fill the folder tree
* breadcrumb

Regards,
Szymon