Now about page is good. Fixed BUG with play of bells

src/boxingtimer.h

@@ -13,6 +13,7 @@
  * @defgroup QML What interacts with view
  */
 
+class QSound;
 class BoxingSettings;
 
 /**
@@ -157,6 +158,10 @@ class BoxingTimer : public QTimer {
         void setRemainingMilliseconds(const int &milliseconds);
         void setRound(const int &round);
 
+        QSound *playBell;
+        QSound *restBell;
+        QSound *stopBell;
+
         void songsBell();
 
         Status mStatus;