Running 1.9.6 on Ubuntu test environment.Apache 2.2.22MySQL 5.5.35PHP 5.3.10I am looking to find away for the tickets from the agent side to be listed by last response. Occasionally we get a response to an old ticket (usually a feature request) either by a user or an agent and would like for that to get bumped to the top of the list so all team members can see new activity on that. I'm not looking to add another column for last response, just changing the default sort order. As it stands now, when I first log in, the default sort order is by priority (emergency first, low is last).Within the ost_ticket table I see lastresponse, updated, and last message and can sort by those within the database, but can't seem a way to "call" those into a sort by altering the code. I would be content with clicking on sort by ticket id would sort by last response if that were easier.The sorting appears to take place in tickets.inc.php but does not seem to like the sort by ticket.lastresponse.Any thoughts?