Correctly add vitalinfo when submitted as a child of patient json
Order vitalinfos relationship on patient
Serialize last check in as the latest vitalinfo object. Change sampledata and server to not set last check in as last checked in date
Patients serialize last vitalinfo as last_check_in
Move data from patient to vitalinfo
Set latest_check_in on patient when vitalinfo is added
Set latest_check_in on sample data
Remove unused import