minor improvements

zero.Debug/Renderers/module.textwithimage.js

@@ -3,6 +3,7 @@
 
   // define a preview which is rendered in the overview
   preview: {
+    label: false,
     template: '<ui-module-preview-figure :text="model.headline" :subline="model.text" :image="model.imageId" />'
   },
 

zero.Debug/Renderers/page.root.js

@@ -0,0 +1,7 @@
+import PageContent from './page.content';
+
+export default {
+  alias: 'page.root',
+  tabs: PageContent.tabs,
+  fields: PageContent.fields
+};