inject site config during Sass compilation

[greenwoodcm]

IMPORTANT: Please do not create a Pull Request adding a new feature without discussing it first.

The place to discuss new features is the forum: https://zola.discourse.group/ If you want to add a new feature, please open a thread there first in the feature requests section.

Sanity check:

• [x] Have you checked to ensure there aren't other open Pull Requests for the same update/change?

Code changes

(Delete or ignore this section for documentation changes)

• [x] Are you doing the PR on the next branch?

If the change is a new feature or adding to/changing an existing one:

• [ ] Have you created/updated the relevant documentation page(s)?

[greenwoodcm]

@Keats thoughts on this latest rev?

[Keats]

@greenwoodcm do you think you will have time to address the comments?

[greenwoodcm]

oof, sorry this has been sitting forever, family life has me busy these days...i do plan on making these changes, thanks for the reminder

[Keats]

No worries, I'm on paternity leave myself so not super active either