Add enableAjaxValidation and enableClientValidation support

I couldn't set ```enableAjaxValidation``` and ```enableClientValidation``` values for the specified field when I used  ```TbActiveForm::FieldControlGroup()``` methods. I discovered you probably miss these flags calling ```TbActiveForm::error()```. 
Usage example: 
```php
<?php echo $form->checkBoxControlGroup($model, 'rememberMe', array('errorOptions'=>array('enableClientValidation'=>false))); ?>
```