…e due namespace pollution;
It is hard to tell which tests are running and which are not, so I suggest adding a color to the left on the experiments list. Red is for stopped and green is for running. Colors used are from the [Firefox OS guide](http://buildingfirefoxos.com/common-controls/fonts-and-colors/)
@defaults was always undefined due to scoping issues, so defaults were never actually used.
Abba cookies to expire.
'extend', when compiled to js, was returning an array of arrays rather than an object due to implicit return. This broke the options sent to setCookie, because the 'expires' attribute of the returned options object was always undefined, so the cookie expiration field was never set as options.expires.toGMTString(). As a result, the abbaVariant and abbaPersistComplete cookies incorrectly had no expiration date or a received a default expiration from the browser, rather than the 600 day expiration specified in the code.
… calculate probability