CITY-7: Convert Inclusive Cities website to Hugo

[simonbates]

NOTE: Do not merge this work to master until associated changes have been made on the CI server to switch the deployment process over to use Hugo rather than the existing direct file upload. Please co-ordinate with @gtirloni and @waharnum.

This pull request changes the Inclusive Cities website to use the Hugo static site generator.

Notes

• I've tried to make the Hugo generated version of the site as close as possible to the existing files, to make it possible to diff the files before and after to check the conversion
• I've put together some scripts to compare the Hugo generated version to the existing files (see below for details)
• I'm using the Hugo relURL template function for URLs in the header and UIO initialization code; this results in those URLs being different from the existing files (I was unable to find a way to cause Hugo to keep those URLs the same as the current ones)
• The SVG images for the co-design-draft-proposal post used to live beside the HTML file but I've moved those now to static/images
• By default Hugo injects <meta name="generator" content="Hugo 0.47.1" /> into the header of the homepage; it's possible to turn this off but I think it's fine to include this

Diffing Hugo generated files against existing

• I've written some scripts to automate checking the Hugo version of the site:
  • https://gist.github.com/simonbates/e100858214d3219617ad6ffc1d806c09
  • https://github.com/simonbates/diff-website
• The script check-website-cities-hugo.sh in the first gist above is the main script to run and calls the scripts in the diff-website repo
• It expects a certain configuration of files on disk to work (where "." is the directory from which check-website-cities-hugo.sh is being run):
  • ./diff-website -- a clone of the diff-website repo above
  • ./website-cities -- a clone of my website-cities on the CITY-7 branch, with hugo having been run
  • ./website-cities-master -- a clone of website-cities master (to compare against)
• I've uploaded the output when I run on my computer: https://gist.github.com/simonbates/e100858214d3219617ad6ffc1d806c09#file-results-txt

[michelled]

I've tested this and it looks great!

[CLAassistant]

All committers have signed the CLA.

[waharnum]

CI is now reconfigured, merging.