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
* Importing all components from a root components file
* Update Ratings component to avoid circular dependencies, fix tests
* Export components on `wc.components`, use this for importing
* Move react-dates initialize to the components file
* Push query changes to history
Fixes an issues where native a links do not update the query in `history`
* Update test config for new @woocommerce/components path
* Update chart components import
* Merge simple/complex & alphabetize by first exported name
* Add a readme with info about how to call these components