Design site refresh

[bartaz]

Done

A quick refresh of design site pages to remove legacy layout and components and use more of the new surus and layouts.

Fixes WD-1574

QA

Review pages, make sure they look ok.

• home
• brand
• font
• vanilla
• accessibility
• resources
• contribute

[webteam-app]

Demo starting at https://design-ubuntu-com-310.demos.haus

[lyubomir-popov]

• images should have .5rem margin-top (we use .p-image-wrapper on u.c and c.c for that), and hrs should have p-rule:

• don't see the email signature I had added at the bottom of the resources page

[bartaz]

• don't see the email signature I had added at the bottom of the resources page

Email signature is not in scope of this PR. I want to do design updates first.

[lyubomir-popov]

Can we do something like this on the Brand page:

Font and vanilla will need some further work, but can be left as is for now.