History: Tiki23 dogfood performance

Related: ((Pre-dogfood servers for Tiki 24 release process))

! {{page}}
Let's test ((tw:dogfood)) sites for ((Performance)) so we activate all performance features and we discover gaps to better performance.
* Let's focus on testing sites with ((Tiki23)) so we are working on very recent code. Let's not test on ((Tiki22)) because it is soon EoL. Once we have done all 23.x sites, we can review ((Tiki21)) LTS sites to see if we should backport anything.
* Let's use a few different services as they each provide different insights

!!# URLS to test
* https://themes.tiki.org/Template-Tricks
* https://doc.tiki.org/Requirements
* https://dev.tiki.org/Get-code
* https://tiki.org/Participate

!!# Testing services

!!!# Yellow Lab Tools
https://yellowlab.tools/

!!!!# 2021-07-23
86/100: https://yellowlab.tools/result/g0r4as5sex

!!!!# 2021-07-27
80/100: https://yellowlab.tools/result/g0vmto3deb

!!!!# 2021-07-29
54/100: https://yellowlab.tools/result/g0xhlu6gtm

!!!# GTmetrix
https://gtmetrix.com/

!!!!# 2021-07-23
https://gtmetrix.com/reports/themes.tiki.org/tNOYoDVH/
GTmetrix Grade C
Performance  49%
Structure  81%
First Contentful Paint  Much longer than recommended 1.8s
Total Blocking Time  Much longer than recommended 1.1s

!!!!# 2021-07-27
https://gtmetrix.com/reports/doc.tiki.org/AH19PuBv/
GTmetrix Grade 
Performance  63%
Structure  78%
Web Vitals  LCP 1.9s
TBT 291ms
CLS 0

!!!# WebPageTest.org
https://www.webpagetest.org/

!!!!# 2021-07-23
https://www.webpagetest.org/result/210724_BiDcR7_f4e779075883cb07b9a65b044b4c487a/

Largest Contentful Paint (5401 ms)

!!!!# 2021-07-27
https://www.webpagetest.org/result/210728_AiDcQ1_0e5b8ecc6a50cc384ecc706580284120/
A+ Security score
A First Byte Time
A Keep-alive Enabled
A Compress Transfer
A Compress Images
F Cache static content
X Effective use of CDN

Largest Contentful Paint (5.673s)

!!!# Dareboost
After a number of tests, you can no longer do free/anonymous testing (contrary to 3 options above)
https://www.dareboost.com/

!!!!# 2021-07-24
* https://www.dareboost.com/en/report/a_160fbf7a962499c02a30fc613?reportIds=a_160fbf7a962499c02a30fc613
* https://www.dareboost.com/en/report/a_160fc730b62499c02a31006f2?reportIds=a_160fc730b62499c02a31006f2