Fixed onlyTagList when use with typeaheadAjaxSource

I just added 

```javascript
tagManagerOptions.typeaheadSource = source;
```
in 
```javascript
var setTypeaheadSource = function (source) {
      obj.data('active', true);
      obj.data('typeahead').source = source;
      tagManagerOptions.typeaheadSource = source;
      obj.data('active', false);
   };
```