Change parent-child relation between components

The unchanged relation:
(Vehicle<PanelRoads),(PnelBackground)<FrameFacingVehicle

The changed relation:
Vehicle<PanelRoads<PanelBackground<FrameFacingVehicle

Before relation have problem that not operate repaint background when
moving vehicles.
Merge branch 'master' of https://github.com/jun9358/RacingVehicle