Remove deprecated style
Deprecate grey section style selector
Simplify to only in-use background elements for home
Adjust global gray hue
Resolve content "header" margin with content
Tidy and update for home page layout tweaks
Draft first pass curriculum links, deprecated slides
Move beta-dark ship paths to final path
Update social media descriptions and links
Replace beta layout with final
Update all pages to final curriculum layout
Tune TOC padding
Tune wording per Jordan's request
Merge pull request #209 from github/curriculum-go-live-home-links

Update home page with new curriculum slide/workbook combination