Code cleanup in GameManager

-Added/improved debug output
-Put initalization of Paddles in separate function
-Several smaller readability improvements
Refractpred ingame rendering

-Moved rendering of Balls, Tiles, Paddles, BonusBoxes and Bullets to
separate functions
Single Player now only displays Paddle if two player mode

-Added isTwoPlayer mode to the if that surrounds rendering of remote
Player Paddle.