Regression testing v2

We require full regression testing of version 2 which is to commence on the 25th of February.
Please log all bugs as subtasks to this Epic.

Minimal targets for
Storefront:

• Checkout with and without registration
• Purchasing items with different availability
• Preorder/backorder
• Sales prices and promotions testing
• Profile management
  YUM:
• Import from demo
• Import with updates on top of demo (catalog, products, promotions, shipping)
• Go through all sections in YUM to check Create/Retrieve/Update/Delete (CRUD) functionality of all objects
  Performance:
• Run JMeter scenario to get performance metrics for demo store for 100, 500, 1000 and 2000 users on one storefront server