[Princeton] buggy, disable
Merge branch 'master' of ssh://github.com/EFForg/https-everywhere
Add Facebook hidden service ruleset

Tested as follows:
1.  Symlink FacebookCoreWWWi.onion.xml into /Applications/TorBrowser.app/TorBrowser/Data/Browser/profile.default/HTTPSEverywhereUserRules/
2.  Launch the Tor Browser
3.  Open the Network debugging console
4.  Paste http://facebookcorewwwi.onion (note: http) into address bar and hit enter
5.  Observe a request to https://facebookcorewwwi.onion (note: https)