Upgrade retina.js to 1.3.0
Refactor lifestream date formatter JS to be smaller

The refactor simplifies and saves 200 characters of minimized source

The original source is included in static for easier editing.
Remove unnecessary script type tag for google analytics
Upgrade jquery to 2.1.1
Upgrade bootstrap to 3.3.0

Also, concatenate bootstrap and sitewide CSS files to save on
a network hop.