cookieblocklist mathjax

https://github.com/EFForg/privacybadgerfirefox/issues/142

Conflicts:
	doc/sample_cookieblocklist.txt
getting rid of unused code
Merge pull request #191 from EFForg/cookiehandlingexperiment

Cookiehandlingexperiment
Merge remote-tracking branch 'upstream/master' into sharemenot