Yeah it's me again, sorry.
It's great that you added "Updated" column but there's a bug with it in the svntrunk code, cause this column uses the setting "date.format" to format the time and you haven't included it in the install.sql so it's gonna be blank, also until now you used underscore to separate words in the settings table so maybe it should be "date_format", just sayin'.
Also I think it would be more useful to have the last update time display in the same format that it's displayed on the ticket's page (for example "Last modified 10 months ago") and not the exact date. You already have a function for that so it's not hard to do ;)
I've been making small commits with unfinished things, like the date_time_format (removed the '.'), it's all working now. I will update Updated column to display it like the ticket page does.