Optimizate /api/matches endpoint
- The /schedule page now spawns on the current round by default (see e1703479)
- /api/matches:
- No longer calculates demerits on teams and their members
- Doesn't populate referees/streamers/casters (only returns their ObjectID)
- Doesn't populate sets at all (returns an empty array)
Possible regressions on PATCH /api/matches/staff
to be tested.