Minor fixing and adjustments

I touched up on a few things

Flash:

• No longer requires resetting the room to proceed to the next height with Marathon enabled!

General:

• Added the breaking animation to the game when the stage is cleared (Marathon, Flash only), meet the win condition or when you top out.
• Piece generation is now more faster and robust and should not hang when other things are happening.
• Removed the "window size" thing when you return to the menu after quitting from the game via the menu.

Menu:

• Sound effects have been added.

Coming up:

• Sound effects (I am currently getting opinions and feedback on that, when I am ready and got the suggestions in and finalised, I will release this as Beta 0.5)