Added some usefull informations for users

Fixed bug with auto logout

src/broadcast.h

@@ -32,10 +32,17 @@ public:
     std::unordered_map<std::string, std::vector<ConversationItem> > conversations;
     void setActivity();
     bool activitiesTimedOut();
+    int currentlyLoggedInSeconds();
     virtual void incomingBroadcast() { std::cout << "incoming" << std::endl;};
     Wt::Json::Object json();
+    int remainingSecondsToTimeout();
+protected:
+    void setLoggedIn();
+    void setLoggedOut();
 private:
+    const int timeoutSeconds {1800};
     Wt::WDateTime lastActivity_;
+    Wt::WDateTime loginTimeStamp_;
 };
 
 class Broadcast {