raceday list requires mens first place

[robsiemb]

In order to avoid the need for an outer join (which mysql does not support), racedaylist.inc makes the simplifying assumption that there is always a mens first place if there were rolls [and, furthermore, if there wasn't a race, that the otherwise empty race entry (e.g. no org) for mens first place contains the relevant note as to why (e.g. "Covid" or "war years")].

Ideally, we wouldn't have a hard dependency like this on any of the race classes.

Extensive discussion of the issue is in an comment above the relevant query in racedaylist.inc