This commit adds two backwards compatible changes to prepare for the next Hugo version, most notable:
* All the `File` methods on `Page` has been deprecated and will give a warning in the next Hugo version. Adjust this by changing `.Dir` to ´.File.Dir` and similar.
* Version the capture shortcode to use the old behaviour for markdown rendering of shortcode inner content.
* [WIP] Add template for tool reference docs
- provide a template for generating tool reference docs.
- use in reference-docs/gen-compdocs/generators to create
consist looking markdown files for the tools.
* Fix lines
* remove test page
Bjørn Erik Pedersen
Luc Perkins
Qiming
Karen Bradshaw