[STABLE] Level Select Update (Large Mario, Items, Pause Menu)

This update contains the level select menu and the pause menu. These
menus are essential to gameplay and will continue to be updated until
they are fully functional and thoroughly bug tested. A new shade was
added to give the pause menu a bit more pronounced state that it is
active. Just as well, the Item.java object has been created to soon
implement items such as mushrooms, which level Mario up to big Mario,
which is also in this update. More prep for tubes as well.