Standardize past competition pages to new format

[sprestrelski]

Element.AI and StarChess.AI use the new competition routes, but all previous ones don't.

• Create equivalent markdown pages for Energium, Hide and Seek
• Figure out a way to gracefully handle spaces in the competition names for cleaner links
• Configurable leaderboard columns based on data

Also, find out if NN modeling was ran multiple times since the metadata has discrepancies (FA20, WI21, WI22)