Problem
There is a case in pretalx where a slot exists with no start/end date. In that case the slot currently gets generated as null__null and the schedule shows the date as the unix epoch (1970).
Solution
PretalxService#getDeconfSlots should filter out slots that have no start/end date
PretalxService#getSlotId should return null/undefined if either date is not set
Problem There is a case in pretalx where a slot exists with no start/end date. In that case the slot currently gets generated as
null__nulland the schedule shows the date as the unix epoch (1970).Solution
PretalxService#getDeconfSlotsshould filter out slots that have no start/end datePretalxService#getSlotIdshould return null/undefined if either date is not set