* Remove ad support, analytics and Wegame leftovers
The game may be somewhat broken in a few places, but it doesn't matter
for now. This is still not the end.
* Remove Steam SSO and demo stuff
Steam SSO is completely removed, a few things from demo like simplified
level sets are gone as well. Puzzle DLC on the other hand is now always
"owned" and will ask for a token to log in.
Removes
* Use shapez dialogs for Puzzle DLC token input
Yes, this sucks *a lot*. But it's a temporary measure, trust me :P
* Simplify HTML tasks
Removes the web (demo) index.html page and makes HTML tasks independent
of the build variant. This might not be the best solution, but it works
for now.
