How to change listing's permalink to /category/listingname?
I want to change the permalink to the category pages and to the actual listings.
The original path to the category page is
/listings/category/[name of category]/ and that shoud be only /[name of category]/
The original path to a listing is
/listings/[name of listing]/ that should become /[name of category]/[name of listing]/
How do I do that?