Support vanity URLs for configuration pages
This MR adds docs configuration for 'vanity' URLs for configuration files, e.g. so that users can permalink to /accounting/ rather than /90-igwn-accounting/ (where the number might change, etc).
This MR adds docs configuration for 'vanity' URLs for configuration files, e.g. so that users can permalink to /accounting/ rather than /90-igwn-accounting/ (where the number might change, etc).