Replaces MongoDB support with PostgreSQL (#151)

- All schemas have been rewritten to a relational model
- All services have been rewritten to accommodate the new data model
- Adds idempotency keys to core endpoints allowing you to retry requests with no additional side effects
- Adds staged jobs to avoid putting jobs in the queue when transactions abort
- Adds atomic transactions to all methods with access to the data layer

Co-authored-by: Oliver Windall Juhl <oliver@mrbltech.com>

packages/medusa/src/api/middlewares/error-handler.js

@@ -5,6 +5,8 @@ export default () => {
     const logger = req.scope.resolve("logger")
     logger.error(err.message)
 
+    console.log(err)
+
     let statusCode = 500
     switch (err.name) {
       case MedusaError.Types.NOT_ALLOWED: