Scrape historical rankings from web archive

• https://web.archive.org/web/20191130231543/https://boardgamegeek.com/browse/boardgame
• https://web.archive.org/web/20050206013226/http://www.boardgamegeek.com/rankbrowse.php3
• https://web.archive.org/web/20050407045123/http://www.boardgamegeek.com/top50.htm

Factored out from board-game-data#3