If a Organisation / Phrase / Contract is defined in data but then never referred to?

[odscjames]

Is that a new check?

[duncandewhurst]

Contracts aren't referenced anywhere, but checking for unreferenced organisations and unreferenced phases seems reasonable. I would put these as warnings rather than failures, though. It's not necessarily wrong to have unreferenced organisations or phases so I'd say this is a low priority for now.