* [CHD-3615] [Virtual Attendants/Scheduled Behavior] Fixed a bug where a deleted Virtual Attendant behavior could remain in the scheduled behavior queue and cause an error when viewing an associated profile.
6.5.5-checkpoint
* [CHD-3494] [Virtual Attendants/Relay] Fixed an issue where new tickets created by workers from the UI didn't relay their attachments to external worker email addresses.
* [CHD-3616] [Mail/Merge/Usability] Fixed an issue where the merge popup on a ticket profile failed to complete properly if any of the tickets in the chooser had their peek popup opened during the process.
* [CHD-3617] [Mail/Reply] Fixed an issue that occurred when multiple workers attempted to reply to the same ticket within a short time period.  Normally this displays a warning with a 'Continue replying' option, but clicking this button wasn't doing anything.
* [CHD-3444] [Mail/Peek/Usability] Added the relative time to the 'Date:' header on the ticket peek popup.  For example: "Tue, 21 Jan 2014 01:30 am (45 mins ago)".  Previously this only showed the absolute date.
* [CHD-3414] [Mail/Profiles/Masks] Fixed an issue with ticket mask patterns that are purely numeric (e.g. date-based like: 201401220001) which prevented their profiles from displaying.  This had to do with Cerb assuming their masks were internal IDs.  Now masks are always checked first, and IDs are only checked if there's no match.  The performance of this lookup was also improved, because it was previously looking up ticket metadata in two database queries (mask->id, then id->metadata).  A single query (mask->metadata) now retrieves the record in most cases.  For sanity's sake, it is still important that ticket masks don't overlap with IDs, so a date-based mask format would be improved by adding hyphens between the components (e.g. 2014-01-22-0001).
6.5.5-release checkpoint
Merge branch '6.5.5' into stable