Individual analysis phases 2+

[Alex-At-Home]

• [x] Incorporate DRtg (with diag) #75
• [ ] Add position to sort
• [x] Add O/DRtg adjustments (usage/SoS) (forgot to link to commit)
• [x] Add ability to view possessions as % https://github.com/Alex-At-Home/cbb-on-off-analyzer/commit/aa61d76ff1e31a9f03111a1d9136d9e3591e10a3
• [x] Add positional classification #94 and #95
• [x] ~Consider switching to DBPM (+ODPM) now that have positional classifications~ (decided not to)
• [x] Incorporate luck #110
• [x] Stats editor #112
• [x] Player leaderboard (forgot PR)
• [ ] Show approx location in leaderboard
• [x] Use assist rates to get better ORtg (forgot PR)
• [ ] Fix Adj Rtg+ to stop doing the weird regression on usage (and possibly make it symmetric either side of 20% usage)
• [ ] Adjust AST related credits to take into account "assisted eFG bonuses" for 3P, mid, rim (split into cut-like and post-like)
• [ ] Fix DRtg FTR to use actual possession count instead of 0.475*FTA
• [ ] ORtg uses globalRosterStats to calculate some images (leaderboard doesn't) for extra regression - but it's not very consistent with how I do things elsewhere

[Alex-At-Home]

My recollection is that sort needs some work (other than adding position)

Also I had some ideas about improving d-rating, eg incorporating fouls (maybe what types of shots get charged to which positions?) ... but unclear if it's just better to switch to DBPM