alphabetical order for sidebar sections

[fitztrev]

with exception for oauth to keep it at bottom

[tors42]

Here's two external anchor links to Arena/Swiss groups, which would need handling after alphabetical consolidation of the two tournment types,
Arena/Swiss tournaments -> Tournaments (Arena/Swiss)

https://github.com/lichess-org/lila/blob/6c72640185968fd94c5026179c140be71fe07297/ui/tournament/src/view/finished.ts#L91
https://github.com/lichess-org/lila/blob/6c72640185968fd94c5026179c140be71fe07297/ui/swiss/src/view/main.ts#L253

[icp1994]

Kinda prefer the current ordering tbh, which has somewhat of a relevance ordering. Users & Relations next to Account makes sense near the top of the page as opposed to Analysis (cloud eval). Personally don't like Tournament (Arena) phrasing over Arena tournaments

[fitztrev]

Broadcasts is my most frequented section and I end up having to scan for it. I supposed I'm indifferent. But if we want to do it by relevance groups, then Messages should be near Users + Relations, Board + Bot near Games, Broadcasts + Studies should be grouped, etc. Alphabetical just takes the arbitrariness out of it.