Restyle home page of docs.gitlab.com

• Refactor https://docs.gitlab.com/ with help from UX and Engs
• Replaces #230 (closed)
• Note that these designs display the updated header design, which can be implemented per #637 (closed)

Good example docs sites

• SendGrid
• Stripe
• Stripe API
• CircleCI
• Heroku
• Slack
• Slack API
• Kong
• Webpack
• Laravel
• Pantheon
• Docker
• Buildkite
• Grafana
• Algolia

Also check the beautiful docs list

Design

Old vs. new design in Figma.

Screenshots: