Add some way to navigate tourney home page sections

[cory2067]

I think this is the only thing left to do on the tourney home page. It might be cool to add some table of contents sidebar like in a wiki. The hard part is figuring out how to generate clickable links to sections based on the info/rules markdown.

I don't think we should implement isolated rules sections like in the figma. It really needs to be scrollable all the way through like it is currently imo