RPV-313 (for release, Problems Adding Patient to PV (Already in Unit))
added simple patient creation to add to unit action, adds patient row with username, nhsno, unitcode, patients now correctly appear in Patients in Unit screen. Importer now also uses usermapping to validate patient-user relationship.
Merge pull request #61 from PatientView/bug/release-1-1-4/RPV-313

RPV-313 (for release, Problems Adding Patient to PV (Already in Unit))