Vote counts don't always add up

[metasoarous]

For at least some of exports, vote counts from the comments.csv file don't always add up to what's actually in the participants-votes.csv file.

I have a feeling this is because the old clojure exporter was for at least some period of time pulling vote counts directly from the comments table in the database. I think these caches were never properly maintained by the server, and so became inaccurate.

This may have been fixed in the updated export functionality, but just flagging that there are at least some files here where these values are off.