Create EE Product Landing Pages

This issue is for the design of the EE Product webpages.

• Geo; URL: about.gitlab.com/features/geo/
• File Locking; URL: about.gitlab.com/features/file-locking/
• Premium Support; URL: about.gitlab.com/features/premium-support/

Phase 1 Rollout

• Leverage an existing page template to create the landing page
• Drop in current copy
• Link EE products to the existing features and pricing page

Phase 2 Rollout

• Create the design template
• Open MRs for each of the respective pages to add page design
• Make the EE Products available through the features page and the pricing page