Fix #195, which was one example of error reporting about problems with file uploads for CSS being broken by some required variables being added to the css editing template a while back but not to all the places that use the template.
Also fix a bug which was causing deleting of uploaded images to fail.
Fix #195, which was one example of error reporting about problems with file uploads for CSS being broken by some required variables being added to the css editing template a while back but not to all the places that use the template.
Also fix a bug which was causing deleting of uploaded images to fail.