Improve gender and region documentation/displays

[philipbelesky]

31d09ecbdb8961c91070b9ce749b1c1c1c60071f fixes the omission of cis from the 'male' category such that the labels are now properly mutually exclusive. However, further improvements are desirable:

• It seems best that the category be defined as a preference given different circuit norms and differences in how registration collects gender data. Perhaps just a single text/label with the counterpart being prefixed as 'not' would work? However, that might be difficult to translate.
• To the extent gender and region stats are often publicised in the diversity tab we should have a documentation page that explains how they are assigned and used — there is likely a risk of people feeling miss-categorised. There is also a degree of context needed to explain how/why some quantification/categorisation of gender is needed (as opposed to a free-text field).

• 978 should provide a means of self-verifying the gender recorded by the tab, although it should probably also link to the new docs page to provide context/explanation. While those pages are not absolutely secure, in practice they should be secure enough. Said docs page could also highlight this and recommend an opt-out if necessary?

[tienne-B]

• Bad for i18n as languages may have very different forms and places for "not" depending on the string, which would be unknown. Also it would make a language mis-match if user language is different to tournament language.
• Sure it can link to a new docs page. However, I think the opt-out should be in registration, not in the application. As the link is secure enough, it makes sense to have it use individuals' registration info, even if confidential. About the note, should the notice (and email) at the top of the individual private URL pages be updated to mention the availability of reg/draw info? Can't find a good wording...

[czlee]

Much like most of our other preferences, it should probably be a working assumption that most users, even at large internationals, won't bother to look at or set this preference. It's not a core function of tab software; for most people won't be a thought, and for the few for whom it is a thought, it's an afterthought. A tournament that's serious about presenting these statistics properly should be doing so directly from registration data, not as a side effect of whatever information is collected for the purposes of adjudicator allocation.

For this reason I'm very sceptical that a customisable preference is the answer. In my mind, the reason Tabbycat allows for gender to be specified at all is to assist with adjudicator allocations; diversity statistics are incidental to that. On top of that, as @tienne-B says, this would wreak havoc with translations—unless we want users to specify their label in all six languages (and counting). If we need to clarify anything, I'd rather just revert to the least specific labels: "male" and "non-male" (being an aggregation of "female" and "other"), and explain that "male" is a label name whose meaning can vary depending on how tournament staff at that tournament wished to use it. Realistically, I don't think customisable labels is a solution I'd expect to be used appropriately.

If it's really important for tournaments to be able to provide notes to accompany the diversity data, then I'd be happy for there to be a freeform "diversity statistics message" field, similar to the tournament welcome message field, into which tournaments can type anything they want. This message could default to something explaining that gender and regions are both categories whose meanings are determined by tournament staff (basically a disclaimer). If we're being fully open, I'd actually prefer to go the whole way and just say that their primary purpose is for adjudicator allocations, that these statistics are drawn from that data and should be taken with the appropriate grain of salt, and that many tournaments don't collect this information.