Site improvements

[XhmikosR]

@addyosmani I split this from #418. Could you have a look please?

I'd also like to preconnect to https://api.github.com/ in index, but I'm not 100% sure the patch is right, maybe it needs crossorigin? See 6c34047

Preview: https://deploy-preview-441--google-chrome-labs-quicklink.netlify.app/

[XhmikosR]

@addyosmani friendly ping so that we can move ahead to a new version. See also #421, #403 and #368.

[addyosmani]

I've looked through the changes and am happy with us to move forward with them. Thanks so much for all of your help here, @XhmikosR!

[addyosmani]

I'd also like to preconnect to https://api.github.com/ in index, but I'm not 100% sure the patch is right, maybe it needs crossorigin? See 6c34047

Commented on the commit, but we're all good without the crossorigin attribute there

[XhmikosR]

With all the changes so far on main comparing the production site with the Netlify branch (which isn't 1:1 due to caching the differences in the CDN) and Regular 2G on Firefox:

• Production:

36 requests
234.13 kB / 90.05 kB transferred
Finish: 4.45 s
DOMContentLoaded: 3.44 s
load: 3.45 s

• main:

24 requests
152.77 kB / 80.29 kB transferred
Finish: 2.79 s
DOMContentLoaded: 758 ms
load: 763 ms