Add "orderdesc" modification to advanced search

I was looking for a way to sort results by oldest (ascending chronological order, adding these terms for future search on meta…) when searching inside a topic.

I couldn’t find “Sort by Oldest Post” (there’s only Latest Post), but I did try “Sort by Latest Topic” and it did work.

I think I understand the logic, but the words are a bit counterintuitive in this particular case.

A choice of ascending/descending chronological order would be, for me, a nice addition, I sometimes try to do that, and did it on other forums that allowed it. Often most for fun than looking for specific and interesting info though.

Also, I wonder how often people sort by Latest, compared to the default “Relevance”. I often use “by Latest” on many forums.