OpenVPMS 1.5.1

This is a minor update to 1.5 which contains a few bug fixes. 

The fix for OVPMS-1108 includes a change to the migrate-1.4-to-1.5.sql script which can safely be re-run for sites on 1.5- backups should be performed first!

Bug fixes: 
  • [OVPMS-1104] - StackOverflowError when changing clinicians during invoice editing
  • [OVPMS-1108] - Cannot delete customer notes
  • [OVPMS-1109] - Cannot delete POSTED act during OTC workflow