Update loop due to mismatched Tor Browser version

Due to a Tor security update, we tried to quicken the TBB release by only rebuilding Tor, since the browser did not change.

Unfortunately, the TBB version is now compiled in to the browser for the updater, and the 4.0.7 TBB thought it was still 4.0.6 for updates. This caused an update loop, where the 4.0.7 TBB kept trying to update to itself.