Added rseting of paddle size

-Original size set when Renderer scales the Paddle up according to the
window size
-Reset in GameManager::Reset()
-Only done for local Paddle currently
Possible fix for SEGFAULT

How to reproduce:
-Start a game
-Fire lots of Bullets
-Game will occation break ( SEGFAULT )

Fix
-Since the bug occurs when the level is done, it is logical that the
SEGFUALT is related to clearing up the board.
-Moved call to function UpdateBoard() to main Update() function.
-This seems to prevent the bug, but it needs further testing.