When I click on 'View rules', it seems that no rules have been defined. Is this some sort of visual glitch, or is this actually the case? Also, a lot of the maps don't have pages on the level leaderboard. I assume this is to reduce the clutter that would come with having a lot of maps with no runs, but is there some way to get a map added if one wanted to do a run for it?

Currently I don't think there is, I think the mods will just add pages for those maps as time goes on.