--- a/cms/app-client/app/components/visu-langues.js	Sun Sep 25 22:43:38 2016 +0200
+++ b/cms/app-client/app/components/visu-langues.js	Mon Sep 26 19:01:35 2016 +0200
@@ -130,7 +130,9 @@
 
                 node.filter(function(d) { return d._children; })
                     .classed("children", true)
-                    .on("click", transition);
+                    .on("click", transition)
+                    .append("i")
+                    .attr("class", "fa fa-folder-o");
 
                 node.append("span")
                     .html(function(d) { return d.name + ' <span class="count">(' + d.count + ')</span>'; });