dalton: fix bug where data of periods from different users would be mixed
dalton: fix bug where data of periods from different users would be mixed

this is irrelevant 99% of the time

however, the owner of College Group Meeting changed, and there was one user with the old data and one with the new, resulting in two CGM periods on the schedule

MyHomeworkSpace/api-server,MyHomeworkSpace/api-server,MyHomeworkSpace/api-server