Layout redesign

# New external libs
* jQuery 1.4.2 -> 1.10.2 
* underscore 0.5.5 -> 1.5.2
* bootstrap v3.0.0
* jQuery.tipsy.js v1.0.0
* icomoon (font icons)

The major change here is a departure from sphinx's default layout to a fixed width, responsive layout based on Bootstrap's 12-column grid.