old_contents: 'use strict';
  
  angular.module('app', ['ngRoute']);
new_contents: 'use strict';
  
  angular
    .module('app', ['ngRoute'])
    .config(['$routeProvider', '$locationProvider', function($routeProvider, $locationProvider) {
      $routeProvider
        .when('/', {templateUrl: 'ng/views/home.html', controller: 'HomeCtrl'})
        .otherwise({redirectTo: '/404'});
      $locationProvider.html5Mode(true);
    }]);
subject: Add home route and redirect others to /404