Investigate updating gunicorn worker counts

[jimchamp]

Proposal

@cdrini points out that many of our gunicorn workers are sitting idle waiting for requests. As per gunicorn's guidance, we may be using too many workers.

Let's investigate lower the number of gunicorn workers in our servers.

Justification

Having too many idle workers can negatively affect site performance.

Adding more statsD instrumentation could help us determine if we should adjust the worker count, and by how much.

Breakdown

Requirements Checklist

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