update Piwik to version 2.16 (fixes #91)

www/analytics/core/Updates/2.15.0-b12.php

@@ -0,0 +1,44 @@
+<?php
+/**
+ * Piwik - free/libre analytics platform
+ *
+ * @link http://piwik.org
+ * @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
+ *
+ */
+namespace Piwik\Updates;
+
+use Piwik\Config;
+use Piwik\UpdateCheck;
+use Piwik\Updater;
+use Piwik\Updates;
+
+class Updates_2_15_0_b12 extends Updates
+{
+    public function doUpdate(Updater $updater)
+    {
+        $this->migrateBetaUpgradesToReleaseChannel();
+    }
+
+    private function migrateBetaUpgradesToReleaseChannel()
+    {
+        $config = Config::getInstance();
+        $debug  = $config->Debug;
+
+        if (array_key_exists('allow_upgrades_to_beta', $debug)) {
+            $allowUpgradesToBeta = 1 == $debug['allow_upgrades_to_beta'];
+            unset($debug['allow_upgrades_to_beta']);
+
+            $general = $config->General;
+            if ($allowUpgradesToBeta) {
+                $general['release_channel'] = 'latest_beta';
+            } else {
+                $general['release_channel'] = 'latest_stable';
+            }
+
+            $config->Debug   = $debug;
+            $config->General = $general;
+            $config->forceSave();
+        }
+    }
+}