Code review comment for lp:~unity-team/ubuntu-system-settings/welcome-wizard

OK, Cimi added a commit to address your plugin comment.

I've expanded the OSK bug comment (basically saying it used to be a bug, needs to be re-investigated, but likely won't matter for the way we eventually will launch the wizard).

I've also taken out the __ prefixes and added a script to the source to test the wizard locally. And added a comment to this merge describing how to use it (basically just build locally and run the script).