add site info page

[sumnerevans]

something like: https://rocky.icpc.io/mines/

probably not necessary for this year, but would be nice to have so people don't as so many questions

[ezrichards]

add day-of logistics for teachers (like parking etc) for future years

[ezrichards]

Maybe we refactor the "Rules" page into an "Info" page? Or would they be better separate?

[ezrichards]

Clarify in rules how many teams teachers are allowed to bring (we are maybe too lenient with this at the moment)

[ezrichards]

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