More polish to the game

-Added new settings to the Settings Menu (they do nothing right now)
-Added random default names if the player enters none on the high scores
-Removed the title attribute from HighScoreTable
-Added the ability to take screenshots on menus
-Made ShipBullet.column extrinsic, not instrinsic
-Added a logo and an icon
-Added the ability to use the W/S keys in the menus