Fix insanely confusing TBB issue

We should call Vidalia the "Tor Browser Controller" or something that isn't letter for letter identical.

Users who have a system Tor and a system Vidalia, especially on GNU/Linux are utterly and hopelessly confused by two identical icons, with identical names - I just watched a user who was debugging circuit creation (ie: technically savvy) fail to find the right Vidalia at the right time. It was painful and could be avoided by simply having a single distinguishing UI indicator - a name, a slightly different icon, or frankly, both!

Sadly, users have many reasons to have both Tor Browser and the Vidalia bundle installed (or a system Tor/Vidalia package).