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.
Just a note for later, as this can be postponed and isn't vital to include right now: we should consider getting the status column and floating header on this demo page, even though they aren't part of the framework yet (they might be soon -- I think there are some JIRAs for that). Maybe add a "TO DO" or note somewhere in the code?