/**
  * Override Ajax grid for index to show Bronto Templates
  *
  * @return $this|void
  */
 public function brontoGridAction()
 {
     if (!Mage::helper('bronto_email')->isEnabledForAny()) {
         return parent::gridAction();
     }
     $this->getResponse()->setBody($this->getLayout()->createBlock('bronto_email/adminhtml_system_email_template_grid')->toHtml());
     return $this;
 }