Changed save_stats() to go to the next pages

I realized that each tournament's stats page had a small "next" button
that led to around 9 more pages of matches.  The save_stats() crawler
was only looking at the first page of each tournament's stats, when in
fact there were around 10 times as many matches as I thought.  Fixed
now.
new elos and output
Reversed match order in elo calculation

reversed the order of matches in save_elos().  It was from most recent
to oldest.  It is now from oldest to most recent.