Create a Footer component

[jastr945]

Create Footer.js and Footer.css at the bottom of the page. It can contain things like:

• a current year updated automatically
• copyright info
• a link to Sisters of the Road
• a link to the Terms of Use section (?)
• a link to the Privacy Policy section (?)
• a link to this GitHub repo so that others can contribute
  etc., etc.

Resize the map if necessary.

Check out react-bootstrap - it might be very helpful for creating a responsive footer looking good on any screen.

[jastr945]

The copyright info for thumbs up and thumbs down icons needs to be mentioned in the footer: https://iconmonstr.com/license/