title: Preview pane for TypeScript missing and/or not updating in VS2012/13
body: <p>Has anyone got the JavaScript preview pane visible and working in VS2013? I was using it to learn TypeScript in VS2012 but in VS2013 it's gone. I've installed release 2 RC and the latest typescript, but no luck.
  On a VS2012 machine the JS pane is not updating, whatever I do. All this from just updating TypeScript?</p>