fix: refactor usagestats package (!3366) · Merge requests · Administrator / sourcegraph · GitLab

Administrator requested to merge stages into master Apr 11, 2019

Created by: dadlerj

Addresses https://github.com/sourcegraph/sourcegraph/issues/3333

This is a big refactor and update to the usagestats package, but provides some helpful information about feature usage levels. Some more updates to go in a subsequent PR to reach the full stage def'ns from https://docs.google.com/document/d/19SkGnf0ClEwMuu1xWH5Nz_DSTNPukgLpPLNQL1kuWgM/edit#heading=h.147qf7hec7br, but this gets us much closer.