Improve performance of data loading in web app

[jacobthill]

Currently it takes a very long time to load data in stage (probably prod as well but we can't test this until the data share drive issue is resolved). Loading 20k records takes approximately 24 hours. This makes data aggregation very slow.

To reproduce the issue, transform a set of records locally (see dlme-transform Readme) and send them to the server

scp [~/Path/To/NDJson/File] [email protected]:/opt/app/dlme/datashare

Then navigate to https://dlme-stage.stanford.edu/library/catalog/admin select Add items, enter the name of the transformed file (e.g. aub-output.ndjosn) in the box and click Fetch.

Can we investigate why it takes so long and see if we can speed it up?