add piwik installation

www/analytics/plugins/Overlay/Overlay.php

@@ -0,0 +1,49 @@
+<?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\Overlay;
+
+
+class Overlay extends \Piwik\Plugin
+{
+    public function getInformation()
+    {
+        $suffix = ' Note: Requires the Transitions plugin enabled.';
+        $info = parent::getInformation();
+        $info['description'] .= ' ' . $suffix;
+        return $info;
+    }
+
+    /**
+     * @see Piwik\Plugin::getListHooksRegistered
+     */
+    function getListHooksRegistered()
+    {
+        return array(
+            'AssetManager.getJavaScriptFiles'        => 'getJsFiles',
+            'Translate.getClientSideTranslationKeys' => 'getClientSideTranslationKeys'
+        );
+    }
+
+    /**
+     * Returns required Js Files
+     * @param $jsFiles
+     */
+    public function getJsFiles(&$jsFiles)
+    {
+        $jsFiles[] = 'plugins/Overlay/javascripts/rowaction.js';
+        $jsFiles[] = 'plugins/Overlay/javascripts/Overlay_Helper.js';
+    }
+
+    public function getClientSideTranslationKeys(&$translationKeys)
+    {
+        $translationKeys[] = 'General_OverlayRowActionTooltipTitle';
+        $translationKeys[] = 'General_OverlayRowActionTooltip';
+    }
+}