Add Body Site to Radiology Reports

[hilarymulholland]

DiagnosticReports have a reference to a ProcedureRequest. ProcedureRequests have an optional bodySite property. For each DiagnosticReport, parse the ProcedureRequest id from the json response and do a get request for this information. Add the body site information to the tooltip.

To get Cerner's ProcedureRequest authorization to work you will need to:

1. Add patient/ProcedureRequest.read to the scope defined in fhir-launch.component.ts
2. Update the app registration to include the ProcedureRequest scope for the patient. (See https://engineering.cerner.com/smart-on-fhir-tutorial/#registration for more information).