Move entities decode methods to entities

js/element/NodeElement.js

@@ -225,7 +225,7 @@ export default class NodeElement extends ISelectableDraggableElement {
     }
 
     getNodeDisplayName() {
-        return Configuration.nodeDisplayName(this)
+        return this.entity.nodeDisplayName()
     }
 
     /** @param {Number} value */
@@ -279,10 +279,6 @@ export default class NodeElement extends ISelectableDraggableElement {
         super.setLocation(x, y, acknowledge)
     }
 
-    isEvent() {
-        return this.template instanceof EventNodeTemplate
-    }
-
     acknowledgeReflow() {
         this.requestUpdate()
         this.updateComplete.then(() => this.computeSizes())