- new functionality: Event blacklisting by UUID
- site admins cna enable this feature in the server settings
- enabling the feature will make the required db changes
- any deleted event will automatically get blacklisted
- this prevents deleted events from flowing back from a synced instance
- site admins can manually add UUIDs to the list and remove entries
- fix to UUID duplication issues for attributes
- simply run the admin script and it will regenerate the UUID of attributes that are duplicates, if any such exist
- timestamps/event published status will not be affected
- config.core.php now includes a change that prevents from 404 exceptions being logged
- the sync uses 404s to signal that an event with a given uuid does not exist when negotiating proposal synchronisation
- this causes a dangerously high amount of noise in the logs