Fix diagnosis.use for a, f, w + fix tests

[cragun47]

Does correct lookup of DG1.6 in tables and mappings, using a table 0052 lookup for F & W, and mapping for A

Results in: A:

{ 
code: AD
display: Admission diagnosis
system:  http ://terminology.hl7.org/CodeSystem/diagnosis-role
}

F

{
code: F
display: Final
system: http://terminology.hl7.org/CodeSystem/v2-0052
}

and W:

{
code: W
display: Working
system: http://terminology.hl7.org/CodeSystem/v2-0052
}