Allow users to fix corrupt data segments on upload

[jeff1evesque]

When a user uploads a dataset, on the web-interface, it's possible a segment is malformed. We will need to adjust the backend validator, to return the segment that is incorrect, to the web-interface. The web-interface will then present the json on the webpage, and provide the ability for the user to edit the incorrect segment inline, and resubmit as a data_append. This will be accomplished by the react-json-view package, which was introduced in #3191. Additionally, we may begin brainstorming, how to provide user the ability to modify existing stored datasets on the backend, with this react json interface.