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.
Not sure what "Add hover style if a link or inside a link" means. Does it mean you need `.hover` when inside an `<a>` element in order for `.subdued` to work? Or something else?