For the folders, the KDE wheezy doesn't create folders. I personally consider this an improvement from when it would create 20 trillion folders, since I don't like tons of useless folders. If you want one of them created, then just
I've noticed the Debian folder before, most of it already exists in the main branch of the Kmenu, but it doesn't bother me so I just ignore it. You could edit the <default> and/or your users kmenu to remove them (default would then not create them for future users).