More nuanced combine static files report

Currently the performance review will lower your score for every bit of 
JavaScript which isn't combined. At the very least report should probably 
aggregate at the domain level or at least reuse the CDN list to avoid wasting 
time reporting scripts like http://www.google-analytics.com/ga.js.

A smarter change might be to tweak the logic to weight async scripts 
differently – in addition to Google Analytics, this would avoid discouraging 
good practices like allowing independent caching for resources which aren't 
used on every page of a site, required for the initial page render or 
appropriate on all devices.

Original issue reported on code.google.com by chris@improbable.org on 22 Apr 2013 at 2:25

joelvh / webpagetest

More nuanced combine static files report #147