wrapping div to help react track the location of the inserted html

Fixes #4

src/components/EmblFooter.jsx

@@ -9,12 +9,15 @@ export class EmblFooter extends React.Component {
   }
   render() {
     return (
-      <link
-        rel="import"
-        href="https://www.embl.org/api/v1/pattern.html?filter-content-type=article&filter-id=569&pattern=node-body&source=contenthub"
-        data-target="self"
-        data-embl-js-content-hub-loader
-      />
+      <div>
+        {/* wrapping div to help react track the location of the inserted html */}
+        <link
+          rel="import"
+          href="https://www.embl.org/api/v1/pattern.html?filter-content-type=article&filter-id=569&pattern=node-body&source=contenthub"
+          data-target="self"
+          data-embl-js-content-hub-loader
+        />
+      </div>
     );
   }
 }