Attribute export in execution See merge request !1627
fix crash on schedule_id without SCHEDULER_URL See merge request !1636
translations See merge request !1635
1855 pluggable exporters 2 See merge request !1630
See https://docs.djangoproject.com/en/2.2/topics/serialization/#django.core.serializers.json.DjangoJSONEncoder
fix AttributeDescription.url import/export See merge request !1631
update dependencies See merge request !1632
perf: fix performance regression from 7a2d6f6b See merge request !1633
most notable when using the "add" button in recruitment
Align AttributeDescriptions with BIDS standard See merge request !1628
Refactor: appointments app See merge request !1614
Refine schedule link UI See merge request !1611
Split studies urls See merge request !1621
add subject fixture See merge request !1629
fixup 4e37e677: keep context on submit See merge request !1623
fixup fe066ae3 See merge request !1622
