put back doConnectedCallback

Author: vincentfretin

src/core/a-assets.js

@@ -25,6 +25,10 @@ class AAssets extends ANode {
       return;
     }
 
+    this.doConnectedCallback();
+  }
+
+  doConnectedCallback () {
     var self = this;
     var i;
     var loaded = [];

src/core/a-entity.js

@@ -67,6 +67,10 @@ class AEntity extends ANode {
       return;
     }
 
+    this.doConnectedCallback();
+  }
+
+  doConnectedCallback () {
     // ANode method.
     super.connectedCallback();
 

src/core/scene/a-scene.js

@@ -78,6 +78,10 @@ class AScene extends AEntity {
       return;
     }
 
+    this.doConnectedCallback();
+  }
+
+  doConnectedCallback () {
     super.connectedCallback();
 
     var self = this;