Adjust beatmap clear thresholds

[smoogipoo]

Latest data:

ruleset_id	avg	stddev	p_25	p_50	p_75	count
0	545327	176869	422937	543338	662210	1090997
1	833371	126548	752539	853898	934855	13662
2	808340	143042	718767	833948	919046	6486
3	813899	129695	737681	843075	916008	105404

Previously used p50 levels, but it's probably a little too harsh and ratings are probably fluctuating too much. This adjusts to use p25 levels instead.

[pacowoc]

This makes things even less fun for mania and other modes. Top players in minor gamemode ranked are already complaining that the threshold is too weak and too skillcap-testing and this only makes it worse

[pacowoc]

Holy s- my English grammar is so messed up (You can understand it still I think)

[IceDynamix]

znow: https://discord.com/channels/188630481301012481/1440912440224120882/1499410712546508931
zoobin: https://discord.com/channels/188630481301012481/1440912440224120882/1499460383117803580
tsukiyawhiskers: https://discord.com/channels/188630481301012481/1440912440224120882/1499508937974612078

tldr, for high level mania, the optimal score threshold is somewhere around 950k (4k) or 900k (7k). but this wouldnt work for low elo, so the idea was to use a moving score threshold that depends on elo, which my suggestion is 800k (4k) and 750k (7k) at 1000 elo, increasing linearly up until the aforementioned thresholds at 2k elo.

lowering the mania score threshold would be a major mistake.

the increase in score threshold would require a revisit of hp multipliers and existing elo values