Cleaning technical debt (#192)

* abstract Space component to switch out Map

* basic viewing possible

* restructure components dir

* all jsx --> js

* App.jsx --> App.js

* comment out 3d for now

src/components/time/atoms/Header.js

@@ -0,0 +1,24 @@
+import React from "react";
+import { makeNiceDate } from "../../../common/utilities";
+
+const TimelineHeader = ({ title, from, to, onClick, hideInfo }) => {
+  const d0 = from && makeNiceDate(from);
+  const d1 = to && makeNiceDate(to);
+  return (
+    <div className="timeline-header">
+      <div className="timeline-toggle" onClick={() => onClick()}>
+        <p>
+          <i className="arrow-down" />
+        </p>
+      </div>
+      <div className={`timeline-info ${hideInfo ? "hidden" : ""}`}>
+        <p>{title}</p>
+        <p>
+          {d0} - {d1}
+        </p>
+      </div>
+    </div>
+  );
+};
+
+export default TimelineHeader;