Card #44 update fhir patient rather than create new, using ResourceId not VersionId now as 1:1 between patientview and fhir
correctly parse observation dates including timezone
delete observations inside daterange, only add from xml where in daterange
delete letters with dates that already exist and replace, delete NonTestObservationType.BLOOD_GROUP observation and replace
updated API to get FHIR data based on resourceId,
data last received set to fhirlink update date not creation, added pv_fhir_link.last_update_date to SQL
note, combine fhirResource in data and importer?