Add basic order edit functionality to backend with extended change logging
Extend product editing history
Fix price display in history logs
Fix problems with history log using wrong IDs
Move design polishing, adding ability to change order state & currency
Make shipped orders immutable
Prepare for order coupon editing, fix order history for immutable orders
Allow adding order items in backend
Update select2 library, add option to find product by name
Merge pull request #1864 from stloyd/feature/order_edit

Add basic order edit functionality to backend