Use only timeslot strategy for all categories
Use only timeslot strategy for all categories

Dateslot strategy will be discouraged for now, since it might
be replaced by a particular setting of timeslot in the future.

Defaults will encourage use of timeslot instead for now.

alariva/timegrid,alariva/timegrid,alariva/timegrid,timegridio/timegrid,alariva/timegrid,timegridio/timegrid,timegridio/timegrid