Make changes to the backImage for the cards to use repeating objects rather than a pattern.
(Pattern appears broken for this image and may be an issue with Qt as it works in browsers).
Comment out parts of StateManager's initialization (to be added progressively).
Fix up AddCard in CardArray so the cards pointer doesn't finish pointing at nothing.
Card no longer derives from QGraphicsItem and initialize backImage with correct file path.
Setup initialization of cardManager in GameManager using new Initialize function of CardManager (to be checked in).
Update CardManager to add the cards to the scene during initialization.
Change CardArray to function as an array of Card pointers.