* Relabel Net Revenue to Net Sales, revert previous refund work on Gross revenue and rename to total sales. Update the orer of all the things
* Add gross sales calculation to revenue stats endpoint.
* Restore coupon_total when updating order stats.
* Wire up gross sales to revenue report.
* Fix revenue report refunds calculation when there are no refunds.
* update net sales labels and cases in order, product and category tables
* Subtract refunded shipping and taxes from gross sales.
* pluses to minuses to fix the gross revenue and refund totals when refunding
* Add gross_sales to revenue stats orderby enum.
* Change refund labels to Returns
* Remove usage of defunct coupon_total column.
* Store refunded amount in stats table.
* Rename "gross_total" column to "total_sales".
* Net total for refund orders can be used instead of a new column.
* Rename gross_revenue to total_sales.
* Coalesce coupons total in order stats query.
SUM()ing all nulls gives null, not zero.
* Use segmentation selections to backfill missing data.
Fo when report columns and segmentation columns don't match.
* Remove errant gross_sales from expected interval test data.
* Fix gross sales tests for revenue/stats.
* Move missing segment fills back to their original locations.
* Fix remaining tests failing because of gross sales.
* Fix db upgrade function rename of gross_total column.
* Fix linter errors.
* Show empty chart and summary numbers when search returns no results
* Add changelog message
* Preserve chart mode in empty searches
* Add tests
* Fix CSS Lint error
* Make sure the legend updates when there is no data and it's not requesting
* Rename 'emptySearch' to 'emptySearchResults'
* Fix tests
David Levin
Albert Juhé Lluveras