Tournament games aborted by server restart (or any other reason) shouldn't affect player rating

[Fulmene]

Exact URL where the bug happened https://www.pychess.org/zFreVTMI

Steps to reproduce the bug

1. Play a tournament game.
2. Get the game aborted by any way other than initial move timeout.

What did you expect to happen? No change to the players' rating.

What happened instead? There are some changes to the players' rating.

Operating system and browser version Irrelevant.

[gbtami]

I have absolutely zero idea how this happened, because update_ratings() call is guarded by if self.result != "*": https://github.com/gbtami/pychess-variants/blob/master/server/game.py#L415 and it is not called anywhere else.