API and front-end overhaul:
* API: now returns data better formatted and more concise.
* API: All POST functionality is temporarily disabled in anticipation of initial pilot launch.
* sample-www: now uses CORS to call the API directly, and no longer requires use of a server-side stub intermediary (formerly search.php).
* sample-www: look-and-feel is updated based on Mollie Ruskin’s designs.
* sample-www: now implemented using Backbone.js (minimally).
* sample-www: now uses dust.js templating.
* sample-www: some functionality is temporarily disabled (tagging, NAICS code filtering).
* sample-www: added redirect to “sorry” page for IE9 and older (Backbone/CORS issues).