Revert "Revert "Update webpack.config.js to use linked packages for test runs""
Revert "Revert "Update webpack.config.js to use linked packages for test runs""

This reverts commit 80d78f6701f9c72682d63c7225ba89f94f8e20da.

tidepool-org/blip,tidepool-org/blip,tidepool-org/blip