Show true error if parse of paf file failes, in client side

src/dgenies/static/js/d3.boxplot.js

@@ -85,7 +85,7 @@ d3.boxplot.init = function (id_res=null, from_file=false) {
                     d3.boxplot.launch(data);
                 }
                 else {
-                    $("#supdraw").html($("<p>").html("This job does not exist!").css("margin-top", "15px"));
+                    $("#supdraw").html($("<p>").html("message" in data ? data["message"] : "This job does not exist!").css("margin-top", "15px"));
                     dgenies.result.remove_job_from_cookie(dgenies.result.id_res);
                 }
             }