docs/website: fixing query.yahooapis.com shutdown

This patch rework the use of query.yahooapis.com to do the conversion
from xml to json required by our script and moves to the use of a js
library. Datas are therefore now converted in json format on the client.

Unfortunately, cause of the CORS restriction on nabble and
buildroot.org, we cannot retrieve directly the xml data from these
servers and we need a CORS proxy to do that.

Signed-off-by: Angelo Compagnucci <angelo@amarulasolutions.com>
[Peter: use sha256 integrity]
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

docs/website/footer.html

@@ -1,6 +1,7 @@
 	<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.1.1/jquery.min.js" integrity="sha256-hVVnYaiADRTO2PzUGmuLJr8BLUSjGIZsDYGmIJLv2b8=" crossorigin="anonymous"></script>
 	<script src="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/js/bootstrap.min.js" integrity="sha256-U5ZEeKfGNOja007MMD3YBI0A3OSZOQbeG6z2f2Y0hu8=" crossorigin="anonymous"></script>
 	<script src="https://cdnjs.cloudflare.com/ajax/libs/clipboard.js/1.7.1/clipboard.min.js" integrity="sha256-Daf8GuI2eLKHJlOWLRR/zRy9Clqcj4TUSumbxYH9kGI=" crossorigin="anonymous"></script>
+	<script src="https://cdnjs.cloudflare.com/ajax/libs/x2js/1.2.0/xml2json.min.js" integrity="sha256-RbFvov4fXA9DW/RzOAcIC0ZHIDmghGdsoug5slJHMMI=" crossorigin="anonymous"></script>
 	<script type="text/javascript" src="js/buildroot.js"></script>
 </body>
 </html>

docs/website/js/buildroot.js

@@ -1,17 +1,16 @@
 function load_activity(feedurl, divid) {
-    var yqlURL = "https://query.yahooapis.com/v1/public/yql";
-    var yqlQS = "?q=select%20entry%20from%20xml%20where%20url%20%3D%20'";
-    var yqlOPTS = "'%20limit%2010&format=json&callback=";
     var container = document.getElementById(divid);
-    var url = yqlURL + yqlQS + encodeURIComponent(feedurl) + yqlOPTS;
-
-    $.getJSON(url, function(data){
-        var result = data.query.results;
+    $.ajax({
+      url: "https://cors.io/?" + feedurl
+    })
+    .done(function(data){
+        var x2js = new X2JS();
+        var result = x2js.xml_str2json(data);
         var loaded = 0;
         var nb_display = 8;
         if (result==null) return;
-        for (var i = 0; i < result.feed.length; i++) {
-            var entry = result.feed[i].entry;
+        for (var i = 0; i < result.feed.entry.length; i++) {
+            var entry = result.feed.entry[i];
             if (entry.title.indexOf("git commit") != -1)
                 continue;
             loaded += 1;
@@ -24,7 +23,7 @@ function load_activity(feedurl, divid) {
             var text = document.createTextNode(data);
             link.appendChild(text);
             link.title = entry.title;
-            link.href = entry.link.href;
+            link.href = entry.link._href;
             div.appendChild(link);
             container.appendChild(div);
         }