old_contents: angular.module('cardboard').controller('xxport', ['$scope', 'cardboardService',
  function($scope, cardboardService) {
      
      $scope.exportData = function() {
          saveTextAs(JSON.stringify(cardboardService.cardboard), 'cardboard-' + Date.now().toString());
      }
      
      $scope.importData = function(a, b, c) {
  
      }
  }]);
  
new_contents: angular.module('cardboard').controller('xxport', ['$scope', 'cardboardService',
  function($scope, cardboardService) {
      
      $scope.exportData = function() {
          saveTextAs(JSON.stringify(cardboardService.cardboard), 'cardboard-' + Date.now().toString() + '.json');
      }
      
      $scope.importData = function(a, b, c) {
  
      }
  }]);
  
subject: Update xxport.js