Fix double query

[kyle-sammons]

Summary

Right now we're making two queries to the KalDB backend. One for the histogram data, and one for the logging data. This PR combines that into a single query to reduce the load imposed on the backend and improve the frontend performance. In very unofficial and adhoc testing (via the Chrome Performance tool and multiple refreshes), this resulted in ~0.5 - 1 second improved load time.

Before:

After:

I also had to pin the yarn version due to this issue.

Resolves #38

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