Translator fixes: made language initialization a high-priority event; throw...

Translator fixes: made language initialization a high-priority event; throw Exception if translator not initialized.

module/VuFind/src/VuFind/Bootstrap.php

@@ -217,7 +217,7 @@ class Bootstrap
             $viewModel->setVariable('userLang', $language);
             $viewModel->setVariable('allLangs', $config->Languages);
         };
-        $this->events->attach('dispatch', $callback);
+        $this->events->attach('dispatch', $callback, 9000);
     }
 
     /**

module/VuFind/src/VuFind/Translator/Translator.php

@@ -108,6 +108,10 @@ class Translator
      */
     public static function translate($str)
     {
-        return static::$translator->translate($str);
+        if (is_object(static::$translator)) {
+            return static::$translator->translate($str);
+        } else {
+            throw new \Exception('Translator not initialized');
+        }
     }
 }
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