Resolve "After changing the user of a person, groups are not synced"

Closes #628 (closed)

aleksis/core/models.py

@@ -612,9 +612,9 @@ class Group(SchoolTermRelatedExtensibleModel):
             dj_group, _ = DjangoGroup.objects.get_or_create(name=self.name)
             dj_group.user_set.set(
                 list(
-                    self.members.filter(user__isnull=False)
+                    self.members_recursive.filter(user__isnull=False)
                     .values_list("user", flat=True)
-                    .union(self.owners.filter(user__isnull=False).values_list("user", flat=True))
+                    .union(self.owners_recursive.filter(user__isnull=False).values_list("user", flat=True))
                 )
             )
             dj_group.save()