DO NOT MERGE YET: Demo site V2

Looking for team feedback (copy, angular.js optimization) for the V2 style guide demo site. (rackerlabs.github.io/encore-ui/)

Going to continue submitting commits, especially those marked FIXME.
Would prefer the former, but I think the latter works fine as a stop-gap :+1: Especially if we provide links to staging somewhere where this layout is used (or where action cogs work as expected).