Draft: Fix broken ELO field in the scoreboard

This fixes ELO field in a xon scoreboard (it also reported by teamstatus command). Currently Quake C code is querying old ELO URL that was used in old xon stats, which is returning Page 404 error. This is happening for each player on each game.

Also, it would be nice if xon stats would respond with shorter pager 404 for an API request (since it's returned for anonymous players).