* [Worklists/Message] Message worklists now show ticket status icons: waiting, closed, deleted.
* [Worklists/Message] Message worklists can now include 'ticket status' as a column.
* [CHD-3977] [Reports/Workers] The 'Worker History' report can now be filtered by ticket status.
* [Reports/Workers] The 'Worker History' report worklist now shows the 'response time' column by default.
* [CHD-3978] [Search/Sphinx] Fixed a PHP error regarding DevblocksSearchEngineSphinx::prepareText()
* [CHD-3982] [Mail/Parser] Fixed an issue with inline images on incoming messages that didn't have a file name.  These were being saved with a blank attachment filename which prevented them from being clicked normally or displayed inline on the original_message.html attachment.  These files now have a filename properly generated for them again.
6.8.6-checkpoint
Merge branch '6.8.6' into stable