Wedding TWs to JS

This MR converts wedding double to JS, with a heavy focus on deduplicating.

There is still a lot more that can be deduped here (edit: 165kb -> 110kb so far). I'm guessing that double is mostly a dupe of single, and would eventually like to reduce everything down to one wedding event, so my next step will be comparing this to wedding single. This should make it easier to clean up, and then keep in order.

This is the roughest TW material I have seen in a long time. Some things were typed improperly, and things have clearly been copied badly. In particular, many of these gates make absolutely no sense to me whatsoever.

if (slave1Belly === 1 &&
	(
		(slave2.bellyPreg >= 600000) ||
		(slave2.bellyPreg >= 1500) ||
		(slave2.bellyImplant >= 1500) ||
		(slave2.bellyFluid >= 10000) ||
		(slave2.bellyFluid >= 5000) ||
		(slave2.bellyFluid >= 1500)
	)
) {

My favorite version of that one arbitrarily checked the other slave at 10k bellyFluid in that list, as well as the correct slave. Then when the other slave had the same copy pasted code, someone had fixed it so it was all the same slave. But now it was checking 10k twice...