Run for each patient case extracted from CommCare.

• case_id already present in our DB:
  • update it with changes from CommCare (but ignore any new lab results)
• case_id does not exist, Person exists and can be matched by dob | last_name | first_name:
  • create an IndexCase and LabResult record(s)
• case_id does not exist, Person cannot be matched:
  • create a Person, IndexCase and LabResult record(s)