Add table sorting

[zcorpan]

Fixes #1120.

[martinthomson]

This is a pretty confusing assignment. I think that your intent is to say that the sort should be ascending when the current state is not ascending, but the negation and naming here makes it look backwards. Maybe:

Suggested change

	const isAscending = header.getAttribute("aria-sort") !== "ascending";
	const sortAscending = header.getAttribute("aria-sort") !== "ascending";

[martinthomson]

Suggested change

	return ascending
	? a.localeCompare(b, undefined, { numeric: sortNumerically })
	: b.localeCompare(a, undefined, { numeric: sortNumerically });
	[a, b] = ascending ? [a, b] : [b, a];
	return a.localeCompare(b, undefined, { numeric: sortNumerically });

[martinthomson]

From the code, it wasn't clear to me that this column was:
a) reverse-sorted to begin with
b) effectively the primary sort column for the table

A comment to that effect might help.

[martinthomson]

Suggested change

	const sortNumerically = isInitDescending;
	const sortNumerically = isInitDescending; // Coincidentally, this is the only numeric column.

[martinthomson]

Suggested change

	const isInitDescending = header.classList.contains("more-info");
	// "more-info" is the column that starts out being sorted; in reverse order.
	const isInitDescending = header.classList.contains("more-info");