sramInactiveDays not stored if it is 0

[baszoetekouw]

This filter interferes: https://github.com/SURFscz/plsc/blob/main/plsc_ordered.py#L102-L103
It filters away all False values, of which 0 is one.

What is the reason for this filter? Would filtering only None value suffice?
i.e.

for key, val in record.items():
    record[key] = [r for r in record[key] if r is not None]

[baszoetekouw]

Works: