Fixed some bugs, added some landmarks to help reduce confusion, and added more bad jokes to help increase confusion.

• Added an end screen with a summary of time taken and paint cans collected.
• Smoke and soda can landmarks to help people figure out where they are after falling down.
• In addition to "camera goop", "camera loop", and "camera average", there's a "camera freeze" console command, on the off chance people want to make videos or some nonsense where the goop rolls into frame.
• More useless console commands to troll people trying to type in cheats.
• Attempted to ensure the menu background sound doesn't play once the game is running.
• Timer doesn't start until intro cinematic finishes.