Standardize data type of ID numbers

[bennettforkner]

Gordon IDs in the database are currently either a string or an integer (depending on whether they came from the TmsEPrd or MyGordon databases). I think it would be best to make them consistent before they ever get to the API. Whether this means casting them to a string or an int, I am not sure. But it would be better to have them be the same datatype so that we do not have to write all of this logic to convert them back and forth in the API/UI.

[amos-cha]

🎉 finally