When showing JSON data in the web app, arrays are currently sorted
as if indexes were strings, not integers. This is fixed in the
master branch of react-json-view[1] which we assume is in the latest
release. Update to take advantage of this fix.
[1] https://github.com/mac-s-g/react-json-view/pull/263
Change-Id: I45e26b23981ba8a1d3edc6bd452319c2c6159199