Add magellan copy edits
Add side nav copy edits
Add topbar copy edits
Add thumbnails copy edits
fix topbar merge conflicts
Fix issues with thumbnails rendering markdown
Merge branch '5.0-wip' of github.com:zurb/foundation into 5.0-wip
Fix QA items from documentation refresh page
Fix bugs on documentation refresh checklist
Merge branch '5.0-wip' of github.com:zurb/foundation into 5.0-wip