[bug in outdated jquery-ui script] up/down keys don't work in the chat textarea on the editor page because of jQuery UI Autocomplete 1.9.0

At some point we do need to update jQuery/jQuery UI since we are now a couple versions behind, but honestly it always takes a long time because there are lots of regressions, and since we are usually doing fine in terms of functionality it's not a high priority. That being said, I can confirm this issue in Firefox. My guess is most people aren't noticing it because the only things I think you typically use the up/down keys for the in chat box is a) re-doing the last command, and b) navigating the auto-complete box, both of which are still working fine. Just out of curiousity, what are you needing to use the up/down keys for? Are you typing multi-line chat messages?

I backported this fix so it should be fixed now. Thanks for tracking down the specific bug, made it much quicker to fix it :-) It's on Dev now and will go live to everyone on the 28th.