Add documentation + guidance on using CDN assets

[khawkins98]

Efforts are under way to make the visual framework, fonts, and other assets available from a more performant CDN configuration.

What do I need to do?

There are two changes to note for end users:

1. Assets will only be available with https.
2. Change the domain from www.ebi.ac.uk to ebi.emblstatic.net
   • wwwdev.ebi.ac.uk is now dev.ebi.emblstatic.net

To illustrate

URLs to load will move from:

• //www.ebi.ac.uk/web_guidelines/EBI-Framework/v1.2/js/script.js
• //www.ebi.ac.uk/web_guidelines/EBI-Framework/v1.2/libraries/foundation-6/js/foundation.js
• //www.ebi.ac.uk/web_guidelines/EBI-Framework/v1.2/js/foundationExtendEBI.js
• //www.ebi.ac.uk/web_guidelines/EBI-Framework/v1.2/libraries/foundation-6/css/foundation.css
• //www.ebi.ac.uk/web_guidelines/EBI-Framework/v1.2/css/ebi-global.css
• //www.ebi.ac.uk/web_guidelines/EBI-Icon-fonts/v1.2/fonts.css
• //www.ebi.ac.uk/web_guidelines/EBI-Framework/v1.2/css/theme-embl-petrol.css

to:

• https://ebi.emblstatic.net/web_guidelines/EBI-Framework/v1.2/js/script.js
• https://ebi.emblstatic.net/web_guidelines/EBI-Framework/v1.2/libraries/foundation-6/js/foundation.js
• https://ebi.emblstatic.net/web_guidelines/EBI-Framework/v1.2/js/foundationExtendEBI.js
• https://ebi.emblstatic.net/web_guidelines/EBI-Framework/v1.2/libraries/foundation-6/css/foundation.css
• https://ebi.emblstatic.net/web_guidelines/EBI-Framework/v1.2/css/ebi-global.css
• https://ebi.emblstatic.net/web_guidelines/EBI-Icon-fonts/v1.2/fonts.css
• https://ebi.emblstatic.net/web_guidelines/EBI-Framework/v1.2/css/theme-embl-petrol.css

[peter-walter]

Just to note, only /web_guidelines/EBI-Framework and /web_guidelines/EBI-Icon-fonts are available on the CDN, other assets from the old 'compliance' and 'mitigation' assets (eg /web_guidelines/images and /web_guidelines/css /web_guidelines/js, etc) need to be referenced from the ebi.ac.uk domain.

[khawkins98]

Here's a glimpse at performance differences, because I know this question will be asked (with caching off):

Note: this is from within the EBI network. We can expect greater improvements the further you get from London.

Before

After

[mandarsd]

Getting CORS error for EBI-Generic.woff2 font file -