Fix checkbox trait rendering on change

src/demo.js

@@ -333,9 +333,6 @@ require(['config/require-config'], function() {
 
     window.editor = editor;
 
-		
-
-
 		editor.render();
 	});
 });

src/trait_manager/view/TraitCheckboxView.js

@@ -3,13 +3,13 @@ define(['./TraitView'],
 
 	return TraitView.extend({
 
-    initialize: function(o) {
-      TraitView.prototype.initialize.apply(this, arguments);
-      var iconCls = this.ppfx + 'chk-icon';
+		initialize: function(o) {
+			TraitView.prototype.initialize.apply(this, arguments);
+			var iconCls = this.ppfx + 'chk-icon';
 			this.tmpl = '<div class="' + this.fieldClass +'"><label class="' + this.inputhClass +'"><i class="' + iconCls +'"></i></label></div>';
 		},
 
-    /**
+		/**
 		 * Fires when the input is changed
 		 * @private
 		 */
@@ -17,23 +17,27 @@ define(['./TraitView'],
 			this.model.set('value', this.getInputEl().checked);
 		},
 
-    /**
+		/**
 		 * Returns input element
 		 * @return {HTMLElement}
 		 * @private
 		 */
 		getInputEl: function() {
-      var first;
-      if(!this.$input)
-        first = 1;
-      var el = TraitView.prototype.getInputEl.apply(this, arguments);
-      if(first){
-        var md = this.model;
-        var name = md.get('name');
-        if(md.get('changeProp')){
-          el.checked = this.target.get(name);
-        }
-      }
+			var first;
+			if(!this.$input)
+				first = 1;
+			var el = TraitView.prototype.getInputEl.apply(this, arguments);
+			if(first){
+				var md = this.model;
+				var name = md.get('name');
+				var target = this.target;
+				if(md.get('changeProp')){
+					el.checked = target.get(name);
+				} else {
+					var attrs = target.get('attributes');
+					el.checked = !!attrs[name];
+				}
+			}
 			return el;
 		},