Update remove on component collections

package-lock.json

@@ -1,6 +1,6 @@
 {
   "name": "grapesjs",
-  "version": "0.14.17",
+  "version": "0.14.20",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {

package.json

@@ -1,7 +1,7 @@
 {
   "name": "grapesjs",
   "description": "Free and Open Source Web Builder Framework",
-  "version": "0.14.17",
+  "version": "0.14.20",
   "author": "Artur Arseniev",
   "license": "BSD-3-Clause",
   "homepage": "http://grapesjs.com",

src/dom_components/view/ComponentsView.js

@@ -13,6 +13,7 @@ module.exports = Backbone.View.extend({
 
   removeChildren(removed) {
     const view = removed.view;
+    if (!view) return;
     view.remove.apply(view);
     const children = view.childrenView;
     children && children.stopListening();

src/navigator/view/ItemsView.js

@@ -47,6 +47,7 @@ module.exports = require('backbone').View.extend({
 
   removeChildren(removed) {
     const view = removed.viewLayer;
+    if (!view) return;
     view.remove.apply(view);
   },