Code review comment for lp:~ralsina/ubuntuone-windows-installer/fix-810053

In order to review, I had to add the ubuntuone-client to the sso path, and I needed to remove the credentials from the windows credentials manager.

The branch works as expected, but I still don't understand why we are making the UI be a part of the ussoc process. The dependency graph of module import looks very weird after this change.