I'm modifying a Joomla setup and in a screencast I'd seen they mentioned updating the <filename>linktofileusedintheme</filename> information inside the TemplateDetails.xml to reflect every file used in the theme.. Is this really necessary? why? Or is it just for the initial base installation? Seems stupid that I should inject every file I add to the theme into this xml file... But if I end up keeping this theme and using it to upgrade to joomla 2.0 whenever it comes around, I'd need this file to be complete then?