g-race. Override get game bundle in G-Race game.

G-Race is a game activity, that gets a launcher intent.
The game bunle is not passed as part of the intent, instead it is provided directly from G-Race activity.
This has a minor fix to test game bundle creation.
game_engine. Organize game and game view initialziation.

Since the game layout is initialized in the game constructor, there is no need for a game layout resource.
Organize game view initialization, split the constructor code to several initalization methods.