Review and determine the correct handling of locations

[pmanko]

Currently, the location that gets attached to the patient is the isanteplus default location.

This location is sent attached the patient's identifier, and mapped in the FHIR2 module identifier translator.

However, we should likely use the location information set in the global settings (mpi-client.msg.sendingFacility or registrationcore.mpi.sendingFacility)

In general, we need to review our strategy for managing and setting locations for patients being sent to the MPI, since using the default location does not seem like the correct approach.