Include confidence intervals on OLS estimates
Javascript retooling

Upgrade jQuery and flot, drop excanvas support.

This removes support for IE 8 and below.

--HG--
rename : js-src/flot-0.7.zip => js-src/flot-0.8.3.zip
rename : js-src/jquery-1.6.4.js => js-src/jquery-2.1.1.js
rename : templates/js/jquery-1.6.4.min.js => templates/js/jquery-2.1.1.min.js
rename : templates/js/jquery.flot-0.7.min.js => templates/js/jquery.flot-0.8.3.min.js