Update _config.yml

Added French National Security Authority (ANSSI-FR)
Update _config.yml

Added CanterburyRegionalCouncil a regional govt agency of New Zealand
Update _config.yml

Add edinburghcouncil and alphabetize UK section.
Merge pull request #161 from edinburghcouncil/gh-pages

Update _config.yml
Merge pull request #160 from CanterburyRegionalCouncil/gh-pages

Update _config.yml
Merge pull request #140 from ANSSI-FR/gh-pages

Update _config.yml
Merge pull request #159 from XhmikosR/icons

css/icons.css: Improve readability of font face.
Merge pull request #158 from XhmikosR/404

Update 404.md.
Remove trailing spaces.
index.html: Add some comments to clarify code.

Also fix indentation.
Be consistent with the quotes type.

* use single quotes inside double quotes
* remove unneeded quotes from posts' descriptions

This change is just cosmetic, since jekyll works fine either way but it's better not to complicate things.
Fix indentation.