Fix monitoring rating percentile calculation
Fix monitoring rating percentile calculation

For example, the 1500 percentile should include all players in previous buckets (up to 1500), but not the current one (1500-1525).
arex1337/lila,arex1337/lila,luanlv/lila,arex1337/lila,luanlv/lila,arex1337/lila,arex1337/lila,luanlv/lila,luanlv/lila,luanlv/lila,luanlv/lila,arex1337/lila,arex1337/lila,luanlv/lila