If rater-load fails issue warning instead of crash.
Add version 1 of the rescaled prepfold sigma rating.
Updated myprepfold.py to be compatable with the latest PRESTO
Merge https://github.com/plazar/Ratings2.0
Updated AI version number since AI updated on guillimin. Also changed how pfd is loaded into rater.
Merge github.com:pscholz/Ratings2.0