iansilber/Intab — pull request #4 by amasad (2013-03-25 19:30:05+00:00)
Title: Disallow top window navigation from the iframe

Uses [html5 iframe sandbox property](http://www.html5rocks.com/en/tutorials/security/sandboxed-iframes/) to fix issues with websites like github that disallows framing.

Note that the only flag I excluded from the sandbox capabilities list is `allow-top-navigation`.