Includes database changes. You need to log all terminals out during upgrade

Tweaks and fixes

• Shopify integration: update to API version 2020-01, as 2019-07 is being deprecated in a couple of weeks
• Print contract particulars. Rename build year to model year.
• Profit summary report run on a single user broken. Now fixed (Caused by unit cost profit summary changes in ver 4.810).
• Add purchase unit to sale/tradein/deal.  :  will alert if the full VIN is already on the system : to encourage operators to use existing record (via cust transfer if needed) instead of cloning the record