title: Pause game on go to main menu in symbian^3 through QML
body: <p>I made a game for symbian^3 with QML .
  and I stumbled upon one problem.
  I don't know how to pause my game when the game is go to background (e.g : home button pressed) . especially the music. it cannot stop playing at all. 
  I tried to use (status == PageStatus.Inactive) but it have no use.
  is there any workaround to do this through QML?</p>