added qr-code decoder for android

- added color change for status and navigation bar for android

client/ui/controllers/pageController.h

@@ -71,6 +71,9 @@ public slots:
     void closeWindow();
     void keyPressEvent(Qt::Key key);
 
+    unsigned int getInitialPageNavigationBarColor();
+    void updateNavigationBarColor(const int color);
+
 signals:
     void goToPageHome();
     void goToPageSettings();