title: Yii CJuiAutoComplete data from Ajax request does not display list choice
body: <p>Autocomplete does not display data from sourceUrl;</p>
  
  <p>Controller</p>
  
  <pre><code>public function actionTestAutoComplete() {
          $r = array(
                  array("label"=&gt;"Test 1", "value"=&gt;"Test 1") ,
                  array("label"=&gt;"Test 2", "value"=&gt;"Test 2") ,
                  array("label"=&gt;"Test 3", "value"=&gt;"Test 3") ,
                  array("label"=&gt;"Test 4", "value"=&gt;"Test 4") ,
              );
          echo CJSON::encode($r);
      }
  </code></pre>
  
  <p>View</p>
  
  <pre><code> $this-&gt;widget('zii.widgets.jui.CJuiAutoComplete', array(
                  'name' =&gt; 'test_autocomplete',
                  'source'=&gt;$this-&gt;createUrl("testAutocomplete"),
                  'value' =&gt; "",
                  'options' =&gt; array(
                      'minChars'=&gt;1,
                      'autoFill'=&gt;false,
                      'focus'=&gt; 'js:function( event, ui ) {
                          $( "#test_autocomplete" ).val( ui.item.label );
                          return false;
                      }',
                      'select'=&gt;'js:function( event, ui ) {
                          return false;
                      }'
                  ),
                  'htmlOptions'=&gt;array( 'autocomplete'=&gt;'off'),
              ));
  </code></pre>
  
  <p>The action testAutocomplete works in debug, but the autocomplete does not display data from ajax.</p>
  
  <p>The code bellow work fine.</p>
  
  <pre><code>$this-&gt;widget('zii.widgets.jui.CJuiAutoComplete', array(
                  'name' =&gt; 'test_autocomplete',
                  'source'=&gt;array(
                               array('label'=&gt;'test 1', 'value'=&gt;'teste 1'),
                               array('label'=&gt;'test 2', 'value'=&gt;'teste 2'),
                               array('label'=&gt;'test 3', 'value'=&gt;'teste 3'),
                            ),
                  'value' =&gt; "",
                  'options' =&gt; array(
                      'minChars'=&gt;1,
                      'autoFill'=&gt;false,
                      'focus'=&gt; 'js:function( event, ui ) {
                          $( "#test_autocomplete" ).val( ui.item.label );
                          return false;
                      }',
                      'select'=&gt;'js:function( event, ui ) {
                          return false;
                      }'
                  ),
                  'htmlOptions'=&gt;array( 'autocomplete'=&gt;'off'),
              ));
  </code></pre>
  
  <p>Please, I need help,</p>
  
  <p>Thanks</p>