[demo01] Add dolphin sprite credits
[demo01] Add flower1 sprite credits
[demo01] Add flower2 sprite credits
[demo01] Add flower3 sprite credits
[demo01] Add goblin sprite credits
[demo02] Add goblin sprite credits
[demo01] Add god sprite credits
[demo01] Add lich sprite credits
[demo01] Add skeleton sprite credits
[demo01] Add god marquee credits
[demo01] Add knight marquee credit
Add back the original "allowed_tile" config

This allow to have both "allowed_tile" and "allowed_tile_script", for basic or advanced needs.