Add dnt_enabled config

This includes the commit from PR #30 so that the tests would pass.
Watch dog will get you if you don't watch out. Watch dog sees and watch dog knows. Watch keeps us on our toes. Watch dog assures you that the laws the law. No exception to the rule, watch dog ain't no fool.

![watchdog](http://www.domdeluise.com/gallery/whorehouse.jpg)

j/k, <3s 4evah ^_^