should be name and id fields in ConceptGraphRecord

[tobydragon]

Currently there is only 1 field, name, on a conceptGraphRecord sent to the system. This doesn't hold a name, but rather the ID. THis is because these strings come from CohortConceptGraphs constructor, where it is using the same string as a key for a hasmap, so it has to be unique.

Done when: Both pieces of information are shared correctly in ConceptGraphRecord (and therefore CohortConceptGraphsRecord) so that the final users of the API get both name and ID, and therefore can choose what to display, but also have a unique identifer