[refactor] improve title render

src/js/control.js

@@ -255,7 +255,7 @@ var control = (function() {
     path: "layout.title",
     type: "text",
     func: function() {
-      title.render();
+      title.render.name();
     }
   }, {
     element: helper.e(".control-layout-scrollpastend"),

src/js/title.js

@@ -1,11 +1,13 @@
 var title = (function() {
 
-  var render = function() {
+  var render = {};
+
+  render.name = function() {
     helper.e("title").textContent = state.get().layout.title;
   };
 
   var init = function() {
-    render();
+    render.name();
   };
 
   // exposed methods