* [Virtual Attendants/Dates] Fixed an issue with date-based behavior variables and custom fields in the 'Create task' and 'Create ticket' actions of Virtual Attendants.  It was possible in some situations for strange dates to be generated, like "monday +2 weeks" resulting in a date 90 years in the future.
* [CHD-3850] [Mail/Virtual Attendants] Improved the 'Ticket conversation viewed by worker' event so it runs before the record is loaded on a ticket profile.  As a consequence, any changes to the ticket by that behavior will now be properly reflected on the profile when it loads (previously, this required a page refresh).
[Code Cleanup] Added a translation string for 'Extension'
* [Setup/Translations] Fixed some PHP notices in the Translation Editor when using the 'Synchronize languages' feature.
6.8.3-checkpoint
Merge branch '6.8.3' into stable