New Site: Todo before swap over

[hzoo]

• Figure out the versioning (v6 and v7) Support switching between v6 and v7 docs #1261
• Actually write the v7 docs (a lot of work)
  • Involves renames/rewrites of packages get readme's from master (7.x) #1575
  • Update guides -> docs instead of blog post? Move v7 migration blog post into a doc #1576
  • general lookover
  • new docs Docs for breaking changes/new docs #1577
  • link to the new site from the old New Site: link from old to new site #1571
  • need a review on mobile (like Improve accessibility and color contrast #1570)
• fixup styles/copy on other pages