Improvements and fixes

• Reduced timeout on Search Shipments in the On-premises user interface.
• Improvements to the warning messages in the Bulk shipment flow.
• Implemented global e-mail validation.
• Fixed issue where specifying address kind for postcode validation did not work in Shipping Rules postcode validation.
• Fixed issue with EDI not being generated correctly on some carriers.
• Performance and stability improvements.
• Various technical fixes and refactoring.