Loading Screen

• Shows loading percentage (buggy at 50%)
• Added "story" segment
• Added "Start Game"-Button, so that there is enough time to read story and tips

End of Game

• Added Chocolate Counter to the list
• Tweaked color & wording of non-finished quests

Bugfix/Tweaks:

• Reworked enemy wave spawn logic, Portal Dogs have less spawn priority now
• Fixed: The text from wild sheeps could get stuck at edge of screen