Implement items on the footer

[kelleyglenn]

Need to decide where to put these.

• In a footer on the hero page only?
• In a persistent hamburger menu?
  • Where? In the header?
  • How should it be animated and closed?
  • The map page is pretty clean right now, so it would be a shame to add a persistent footer there, or even a scroll bar.

Items to include:

• Privacy Policy
• Terms of Use
• Donations page
• Roadmap
• Contact
• About AA (include version?)
• FAQ
• others?

[kelleyglenn]

Consider layout like that at https://claude.com/blog: full reactive menu, no expanding necessary