* [CHD-3425] [Virtual Attendants/Code Cleanup] Fixed a PHP error regarding "Undefined variable: func in abstract_view.php" when Virtual Attendant behaviors contained list variables with a specific combination of parameters.
* [Contacts/Snippets] Fixed an issue where the names of Contact Person records always displayed '(contact person)' in snippets and Virtual Attendant placeholders.
* [Virtual Attendants/Actions] When a Virtual Attendant action is missing, the behavior editor will now provide more helpful information, including an indication of what it was supposed to be.  Previously, a blank action box was shown without providing any clue about what was missing.
* [Support Center/History/Reply] Fixed warnings created by the Support Center when a customer replies to a ticket without any attachments.