Integrate the footer from new.drupal.org into the D7 version

opdavies → changed the visibility of the branch palantir-backport to hidden.

I've moved the commits onto the branch related to this issue/MR.

The manual steps I can recall are:

• Disabling the Home link in the main menu, as this is now added outside of the menu.
• Populating the footer menu with the appropriate links.
• Creating and populating the "Footer social links" (menu-footer-social-links) menu with lower-case names for each social network.
• Placing the Footer menu block in the "Footer Nav" region and the "Footer social links" block in the "Footer Social" region.

Creating and populating the "Footer social links" (menu-footer-social-links) menu with lower-case names for each social network.

There is a script in tools/scripts/populate-footer-social-links-menu.php that does this.

The main content issues were caused by box-sizing: border-box; instead of box-sizing: content-box;.

Changing this adds margin and padding in addition to a maximum width value rather than inside of it.

The latest changes update some of the D10 files from the 2.x branch and add some additional D7 specific overrides.

Here's the small script I wrote to download the updated files from the 2.x branch and easily keep any backported files up to date.

I'm happy to commit it to the 7.x-2.x branch if it would be useful.

#!/usr/bin/env bash

set -o errexit
set -o nounset
set -o pipefail

remote_branch="2.x"
upstream_url="https://git.drupalcode.org/project/bluecheese/-/raw/$remote_branch"

files=(
  "components/components/footer/footer.css"
  "components/foundations/grid/grid.css"
  "css/sass-generated-basic-elements.css"
  "css/global-variables.css"
  "css/icons.css"
)

for file in "${files[@]}"; do
  curl "$upstream_url/$file" --output "d10-backport/${file}"
done