Improvements and bug fixes

• Added a new field for "EKAER number" to addresses.
• Shipping Rules now supports setting legal days to "0" for Sundays.
  
• DHL Parcel ES Label Issue: Fixed a problem where no label was returned in the response.
• Fixed an issue where shipments stayed in the inbox after printing.
• Reprinting labels on the PostNord API in a different format now works correctly.
• GLS Label Reprint: Fixed an issue where reprinting to ZPLGK format did not work.
• DHL Parcel Europe Drop Point: Improved drop point detection even when the postcode differs slightly.
• Fixed an issue where the wrong goods type appeared after importing a shipment.
• Fixed problems with creating containers during manual printing.
• Fixed a problem where overlay images were not printed on UPS 60 labels when using PNG or PDF formats.