see if we can work with quepid exports

[jillesvangurp]

Align with o19s/quepid#929

Challenges:

• Quepid is a multiuser system where each query has ratings from multiple users that are somehow combined. Rankquest studio is single user.
• Metrics and queries are somehow conflated.

[epugh]

If you work with the Case exports, then for those the "Ratings" are the combined values of all "Judgements". So if judge A does 1 and Judge B does a 3 and Judge C does a 3, then it's (1+3+3)/3 = 2 (after rounding). That should work for what a single user wants.

Happy to discuss your second point more detail if that helps!