title: Rally 2.0 SDK - Query filtering only returns 200 results
body: <p>I'm trying to get more than 200 elements in my queries. So, I've modified the limit of results that the query should return according to <a href="http://developer.help.rallydev.com/apps/2.0p5/doc/#!/guide/appsdk_20_data_stores" rel="nofollow">this documentation</a>, but this is not working. Any idea?</p>
  
  <p>I'm trying the following:</p>
  
  <pre><code>var tasksWithActualsQuery = Ext.create('Rally.data.WsapiDataStore', 
  {
      model: 'Task',
      limit: Infinity,
      fetch: ['CreationDate', 'Actuals'],
      filters: 
      [     
          {
              property: 'CreationDate',
              operator: '&lt;',
              value: 'LastMonth'
          }
      ]
  });
  
  tasksWithActualsQuery.load({
      callback: function(records, operation) 
      {
          if(operation.wasSuccessful()) 
          {
              var tasksWithActualsCount = 0;
  
              Ext.Array.each(records, function(record) {
                  if (record.get('Actuals') != null)
                  {
                      tasksWithActualsCount++;
                  }
              });
  
              var tasksCount = records.length;
              alert(tasksCount);
          }
      }
  });                
  </code></pre>