Display file path on Files page, and order by path

Migrated issue

Reported by: tim.plunkett

This directory contains HTML files for http://drupal.org/project/advanced_help, and aren't meant to be parsed.

They'll also never have @file docblocks, so http://api.drupal.org/api/views/files looks silly, and http://api.drupal.org/api/views/help%21about.html/7 is useless.