[refactor] improve title render

Author: zombieFox

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 @@
 vartitle=(function(){
 
-varrender=function(){
+varrender={};
+
+render.name=function(){
 helper.e("title").textContent=state.get().layout.title;
 };
 
 varinit=function(){
-render();
+render.name();
 };
 
 // exposed methods