Card #61 get identifiers of GP medication opted in users given username and password (currently ECS only endpoint and user), auditing with GET_PATIENT_IDENTIFIERS_ECS, moved relevant methods to GpMedicationController and GpMedicationService,
add /ecs/getpatientidentifiers to public urls (auth in service)
added SQL for ecr user and properties file details of user,
INSERT INTO pv_user (id, username, password, change_password, locked, email, forename, surname, start_date, creation_date, created_by, dummy) VALUES
  (5, 'ecs','pppppp', false, false, 'ecs@patientview.org', 'ecs', 'ecs', now(), now(), 1, false);