Mozilla promised a faster refresh cycle for its wily web browser, following the release of Firefox 4, and it's made good on that promise. We got word this morning that the final version of Firefox 5 is now available for download on Mozilla's ftp server, just 12 weeks after the last re-up. The latest incarnation brings with it support for CSS animation and a more easily accessible do-not-track setting -- now available at the top of the privacy pane -- but won't see much in the way o