add initial AddSectionDialog

cateditor/src/components/CatalogContents.vue

@@ -130,6 +130,7 @@
     </v-layout>
 
     <AddProductDialog v-model="showAddProductDialog"/>
+    <AddSectionDialog v-model="showAddSectionDialog"/>
 
   </v-container>
 </template>
@@ -142,16 +143,19 @@ import arrayMove from 'array-move'
 import { paginateModels } from '@/pagination'
 import DragListHeading from './DragListHeading'
 import AddProductDialog from './AddProductDialog'
+import AddSectionDialog from './AddSectionDialog'
 
 export default {
   components: {
     DragListHeading,
     AddProductDialog,
+    AddSectionDialog,
     //RawDisplayer,
   },
 
   data: () => ({
     showAddProductDialog: false,
+    showAddSectionDialog: true,
   }),
   computed: {
     ...mapState([