HotFix5 - Progression Balancing

We are trying to slow down the game's progress while keeping it balanced between normal and "premium" users. Some more balancing is expected to be made.

Changelog:

• Have to wait 5 minutes instead of 3 minutes for the Ultimate pickaxe.
• Diamonds will spawn more rarely
• The AFK income pop-up will now appear when the game is opened.
• The multiplier Upgrade unlocks at level 3
• The AFK Income Upgrade unlocks at level 15
• The Auto Miner Upgrade unlocks at level 30
• New layer colors now contribute less to the amount of money you get.