Cosmetic Update + Bugfix

Hello drawers! This update incorporates mostly small cosmetic improvements plus a fix related to a bug in the chapter level list.

I accidently added the same level twice to different chapters — OH NOOO!!! Another explanation would be that the "Magic Box" level magically cloned itself to the chapter "Magnetosphere", because this chapter also had too much magnetic power anyway (which is way more plausible than the first explanation if you ask me!).

The cosmetic update includes the rearrangement of the dark blue hills in the background in several levels (these could also be pyramids, call it what you want). It is a more subtle change, but the old arrangement in some of the more recent levels looked just too boring in my view.

Furthermore, the chapter list now has an "adaptive background image" that takes scrolling and the currently viewed chapter into account.

I'm also working on bigger features, which will probably take weeks or months to finish. Nonetheless, I want to stick to the weekly update plan even if the coming updates will be small.

Thanks for reading and happy drawing! o-o o^o o—o