store the total amount of achievable XPs for a Questgroup in the database instead of calculating it every time (Issue #281)

www/analytics/plugins/Feedback/Controller.php

@@ -0,0 +1,34 @@
+<?php
+/**
+ * Piwik - Open source web analytics
+ *
+ * @link http://piwik.org
+ * @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
+ *
+ */
+namespace Piwik\Plugins\Feedback;
+
+use Exception;
+use Piwik\Common;
+use Piwik\Config;
+use Piwik\IP;
+use Piwik\Mail;
+use Piwik\Nonce;
+use Piwik\Piwik;
+use Piwik\Url;
+use Piwik\Version;
+use Piwik\View;
+
+/**
+ *
+ */
+class Controller extends \Piwik\Plugin\Controller
+{
+    function index()
+    {
+        $view = new View('@Feedback/index');
+        $this->setGeneralVariablesView($view);
+        $view->piwikVersion = Version::VERSION;
+        return $view->render();
+    }
+}