title: Extjs store load success handler not getting fired
body: <p>I have a store load method which returns data via an ajax request. I can see that the data is being returned using Firebug, but my success handler is not getting called:</p>
  
  <pre><code>    this.getCategoriesStore().load({params:{'id':d.data.category_id}}, {
          success: function(category) {
              console.log("Category: " + category.get('name'));
          },
          error: function(e) {
              console.log(e);
          }
      });
  </code></pre>
  
  <p>I am returning a success parameter, along with the data:</p>
  
  <pre><code>{"success":true,"categories":{"id":5,"name":"Frying","section_id":2}}
  </code></pre>
  
  <p>Is there something missing or am I doing anything wrong?</p>