showWelcomeScreenOnMobileDevices method

void showWelcomeScreenOnMobileDevices ()

Shows the 'WelcomeScreenOnMobileDevices' and activates the button click listener for listenGoToMenuButtonAndRequestFullscreen

Implementation 

void showWelcomeScreenOnMobileDevices() {
  MenuView.show().messageWelcomeScreenOnMobile().render();
  this.listenGoToMenuButtonAndRequestFullscreen();
}