fix bug when everything was treated as animation, bug with not working group amount of messages, handled the situation when preview is painted but the file was lost

ui/models/contact.h

@@ -56,6 +56,8 @@ public:
     QString getStatus() const;
     QString getDisplayedName() const override;
     
+    void handleRecconnect();        //this is a special method Models::Roster calls when reconnect happens
+    
 protected:
     void _removeChild(int index) override;
     void _appendChild(Models::Item * child) override;