[CLOSED PR] Wig glue trait that allows mutantraces to wear hats and hair

[Glamurio]

Isn't this entire PR sort of a moot point now that there's a second PR straight up adding hair to muteraces instead? I feel like this should be closed lest people get more confused. Because we certainly can't add both PRs, and I think the main point is adding hair to muteraces so we might as well just do that directly now.