Added keywords for page

src/app.h

@@ -90,6 +90,7 @@ private:
     int messageCursorPosition_{-1};
     std::unique_ptr<Wt::WSound>   messageReceived_;
     Search searchFields;
+    void setMetaTags();
     void initApp();
     void reSetUser();
     Wt::WVBoxLayout *createVerticalLayout();