update index.html for requests that do not expire

lib/www/index.html

@@ -39,6 +39,7 @@ if (id) {
 		var max = 100;
 		var initial = data.time;
 		var duration = data.exp;
+                if(duration){
      		  var current = 100 * (Math.floor(Date.now()/1000) - initial)/duration;
 		  $("#progressbar").progressbar({
 		    value: current,
@@ -54,6 +55,7 @@ if (id) {
 		    }
 		  };
 		  var interval = setInterval(update, 1000);
+                 }
             });
 	    })
 	.fail(function() {