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.
This is something I noticed/experienced too @parlarjb. I think we can tweak this going forward, as I think it's a larger design question that'll require some noodling, as it's a little tricky. @ErnieAtLYD I wouldn't worry about this for now.