public function installAction()
{
$translator = \Zend_Registry::get('container')->getService('translator');
$this->_repository->install($this->_getParam('offset'));
$this->_helper->entity->flushManager();
$this->_helper->flashMessenger($translator->trans('Theme $1', array('$1' => $translator->trans('installed', array(), 'themes')), 'themes'));
$this->_helper->redirector('index');
}