Scoring fixed and updated start screen

Hi all,

Some major changes were made due to a score breaking bug:

• There was a bug in scoring, where tall buildings were accidentally scored twice. As this was fixed, a decision was made that it was best to clear out the high scores to be more fair. My high score is currently at 105975.
• Menu option added to manually clear the high score.
• More visual flair, more screen shakes are triggered than before (yay) and the combo meter starts shaking at high numbers
• The graphic I used for label is now used for intro screen now. You will now always see the smug kaiju in the beginning of the game, maybe taunting you to do better?

Good luck smashing that city!