Site content and style update for sprint2/3 (#279)

* add legend and styling for map page
* update header to latest style/content
* add contact page
* add methodology page
#199 and #200

client/src/pages/contact.tsx

@@ -0,0 +1,20 @@
+import * as React from 'react';
+import Layout from '../components/layout';
+
+interface ContactPageProps {
+  location: Location;
+}
+
+const ContactPage = ({location}: ContactPageProps) => {
+  return (<Layout location={location}>
+    <section className={'usa-prose'}>
+      <h1>Contact</h1>
+      <p>
+        <i>Information pending</i>
+      </p>
+    </section>
+  </Layout>
+  );
+};
+
+export default ContactPage;