Close Preview and remain on detail when back selected

Could discuss with JohnH this morning. There are some ideas at http://stackoverflow.com/questions/19686169/angularjs-redirect-a-route-only-on-browsers-back-button and http://stackoverflow.com/questions/15813850/detect-history-back-using-angular.

This may be interesting: http://www.tivix.com/blog/dont-forget-the-back-button-in-your-single-page-app/