Add standard name mapping to NM

[Ed McDonagh]

Refs issue #862.

NM was added after standard name mapping was added for the other modalities, but merged in later. Postponing adding the functionality to NM at this stage, but should be done later.

[Ed McDonagh]

Merged in developIntoIssue862StandardNameMapping (pull request #505)

Fixes #862

NM standard name mapping to be covered in issue ref #938

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