public function actionIndex()
 {
     $languages = Message::getLanguages();
     // Set language
     $language = '';
     if (isset($_POST['language'])) {
         $language = $_POST['language'];
     } else {
         $language = reset($languages);
     }
     $files = Message::getFiles($language);
     // Set file
     $file = '';
     if (isset($_POST['file'])) {
         $file = $_POST['file'];
     } else {
         $file = reset($files);
     }
     $messages = Message::findAll($language, $file);
     $fileKeys = $messages[0];
     $fileValues = $messages[1];
     return $this->render('index', array('languages' => $languages, 'files' => $files, 'language' => $language, 'file' => $file, 'fileKeys' => $fileKeys, 'fileValues' => $fileValues));
 }