#544 Better handling of the footnote reverse links

* Uses a stylesheet to hide the reverse link in the popover rather than monkeying around with the dom in JS
* Javascript event handler catches clicks on the reverse buttons in the footnote list at the bottom of the page
  and scrolls the document back to the source, rather than opening the document in a browser window.

Mac/MainWindow/Detail/styleSheet.css

@@ -199,6 +199,9 @@ img[src*="share-buttons"] {
 	border-radius: 0.3em;
 	box-sizing: border-box;
 }
+.newsfoot-footnote-popover .reversefootnote {
+	display: none;
+}
 a.footnote {
 	display: inline-block;
 	text-decoration: none;

Shared/Article Rendering/newsfoot.js

@@ -107,16 +107,27 @@
 		}
 	}
 
+	// Handle clicks on the footnote reference
 	document.addEventListener("click", (ev) => {
 		if (!(ev.target && ev.target instanceof HTMLAnchorElement)) return;
 		if (!ev.target.matches(".footnote")) return;
 		ev.preventDefault();
 
 		const content = document.querySelector(`[id='${ev.target.hash.substring(1)}']`).cloneNode(true);
-	    if (content instanceof HTMLElement) {
-		    remove(content.querySelector(".reversefootnote"));
-        }
 		installContainer(ev.target);
 		void new Footnote(fragFromContents(content), ev.target);
     });
+										   
+	// Handle clicks on the footnote reverse link
+    document.addEventListener("click", (ev) =>
+    {
+	    if (!(ev.target && ev.target instanceof HTMLAnchorElement)) return;
+        if (!ev.target.matches(".footnotes .reversefootnote")) return;
+		const hash = ev.target.hash;
+		if (!hash) return;
+		const fnref = document.getElementById(hash.substring(1));
+      
+		window.scrollTo({ top: fnref.getBoundingClientRect().top + window.scrollY });
+	    ev.preventDefault();
+	});
 }());