title: How can I combine two query objects into one?
body: <p>I'm trying extend the Story Board App with a second dropdown menu. How can I combine (AND) the two queries into one? </p>
  
  <p>My attempt so far:</p>
  
  <pre><code>            //Build query based on iteration dropdown
                  var q1 = new rally.sdk.util.Query();
                  q1.query = dropdown.getQueryFromSelected();
  
                  var q2 = new rally.sdk.util.Query();
                  q2.query = dropdown2.getQueryFromSelected();
  
                  var qObj = q1.and(q2);
  
                  cardboardConfig.query = qObj.query;                     
  
              if (!cardboard) {
                  if (cardboardConfig.types.length === 0) {
                      userStoriesCheckBox.setChecked(true);
                      cardboardConfig.types.push(userStoriesCheckBox.getValue());
                  }
                  cardboard = new rally.sdk.ui.CardBoard(cardboardConfig, rallyDataSource);
                  cardboard.display("storyBoard");
              } else {
                  cardboard.refresh(cardboardConfig);
              } 
  </code></pre>