Suggest leveraging Canada.ca implementation from Digital Playbook

[pjackson28]

For the GC Digital Playbook we borrowed your Jekyll theme work for the Canada.ca theme and them ported it over to using the Centrally Deployed Templates Solution (CDTS) managed by ESDC. That way we only have to update one string in our _config.yml to update to the latest version (and use the latest header and footer markup) and don't have to check in any WET files into the repo (beyond some HTML markup in the included/layouts).

You are welcome to use this work to help keep your Canada.ca theme up-to-date with less work. You can find the files in the Digital Playbook GitHub repo.

Thank you for the initial work that we based this on!