Includes Database changes you need to log c9 out during upgrade

Refinements & bug fixes for cross dealership giftcards

• v4/v5 patch for discount voucher behaviour  was not applying for external vouchers. making external discount vouchers unusable. Now fixed
• Bugfix with external voucher use sync back to issuer. Was generating an unbalanced GL posting making sync impossible. Now fixed.
• Tweak GL codes used to sync vouchers back to issuer for discount vouchers (sync to contra code)
• External Voucher rollback on txn error was broken. Writing wrong state forcing voucher to be consumed.
• Payment methods, never grey out giftcards for dealers that can use ext vouchers. Although they may not have any local vouchers, they might be able to access external vouchers

Other fixes:

• Recent changes to Unit Stock take report broke grouping of units in the report. The report correctly prints all units and info, but it messes up the now they are grouped (new, used, floorplan, etc). Now fixed.
• Bulk floorplan payout was not migrated to v5.1 : now done
• quicksuper export, date encoding was incorrect (quicksuper documentation is likely wrong). Now fixed, switched to DD/MM/YYYY format
• free nsw rego check disabled, appears NSW state gov made changes to their website which broke the scraper. Since we now have a professionally supported service, support for free scrapers will be gradually removed as each one fails due to website modifications.
• print deals, have option to apply filter inputted into screen to the report as well
• found another example of circular network graphs of spares invoices where it was not possible to print an invoice. Now fixed.
• a previous version of c9 (5.1.43) disabled ability to merge invoices into a new reserve invoice.  Some refinements here to enforce this behaviour. Some workarounds were possible to get around this constrain.
• Link Int magician check : working again.
• Mojo EPC importer : a couple of breaking API changes made/advised by Mojo's vendor. Implemented here.
• Cancel part on order book for workshop job. Under some circumstances (e.g. ordering the part a couple of different times on different spares invoices) would result in ord qty on workshop job being incorrectly updated. Now fixed