Fix regressions

src/device_manager/model/Device.js

@@ -32,7 +32,7 @@ module.exports = Backbone.Model.extend({
   },
 
   checkUnit(prop) {
-    const pr = this.get(prop);
+    const pr = this.get(prop) || '';
     const noUnit = (parseFloat(pr) || 0).toString() === pr.toString();
     noUnit && this.set(prop, `${pr}px`);
   }

src/style_manager/model/Property.js

@@ -43,8 +43,8 @@ const Property = require('backbone').Model.extend(
     },
 
     initialize(props = {}, opts = {}) {
-      const id = this.get('id');
+      const id = this.get('id') || '';
-      const name = this.get('name');
+      const name = this.get('name') || '';
       !this.get('property') &&
         this.set('property', (name || id).replace(/ /g, '-'));
       const prop = this.get('property');

test/specs/device_manager/view/DevicesView.js

@@ -9,6 +9,7 @@ module.exports = {
       var model;
       var view;
       var editorModel;
+      var em;
 
       beforeEach(() => {
         model = new Devices([]);

test/specs/dom_components/model/Component.js

@@ -389,7 +389,7 @@ module.exports = {
       });
 
       test('ComponentImage toHTML', () => {
-        obj = new ComponentImage();
+        obj = new ComponentImage({ src: '' });
         expect(obj.toHTML()).toEqual('<img/>');
       });
 

test/specs/dom_components/view/ComponentImageView.js

@@ -1,5 +1,5 @@
 const ComponentImageView = require('dom_components/view/ComponentImageView');
-const Component = require('dom_components/model/Component');
+const Component = require('dom_components/model/ComponentImage');
 
 module.exports = {
   run() {
@@ -21,7 +21,6 @@ module.exports = {
       });
 
       test('Component empty', () => {
-        expect(view.el.getAttribute('onmousedown')).toEqual('return false');
         expect(view.el.getAttribute('class')).toEqual(view.classEmpty);
       });