Extracted _calc_ratings_avg_perf from post_process_avg_perf
Extracted _calc_ratings_avg_perf from post_process_avg_perf

em92/quakelive-local-ratings,em92/quakelive-local-ratings,em92/pickup-rating,em92/quakelive-local-ratings,em92/pickup-rating,em92/quakelive-local-ratings,em92/quakelive-local-ratings,em92/pickup-rating