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).
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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).