* Add loading indiciators for the revenue report.
* Improve accessibility, and fix up some documentation comments.
* Fix top border on mobile
* Add EmptyContent Component and revenue error/empty states. (https://github.com/woocommerce/woocommerce-admin/pull/348)
* Add EmptyContent Component and revenue error/empty states.
* Move relative image handling to ImageAsset, combine secondary and primary action rendering, add some missing isRequired proptypes, add empty error handling.
* Handle PR Feedback: Clean up button css, set a default for illustration, fix deprecation typo, some code cleanup.
Update TopSellingProducts table API connection to correctly work
with the new selectors response format introduced in woocommerce/woocommerce-admin#316.
* Connect Top Selling Products table to the API
* Add tests to TopSellingProducts
* Prepare TopSellingProducts component to render loading/error messages
* Adds data layer functions for fetching the revenue report API
* Handle PR feedback: jsDoc updates, create query string util function, api namespace constat.
* Serialize query args in a consistent order