Merge empty cells in list headers

Author: toofff

templates/react/components/foo/List.js

@@ -45,8 +45,7 @@ class List extends Component {
 {{#each fields}}
             <th>{{name}}</th>
 {{/each}}
-            <th></th>
-            <th></th>
+            <th colSpan={2}></th>
           </tr>
         </thead>
         <tbody>

templates/vue/components/foo/List.vue

@@ -43,8 +43,7 @@
 {{#each fields}}
             <th>{{name}}</th>
 {{/each }}
-            <th></th>
-            <th></th>
+            <th colspan="2"></th>
           </tr>
         </thead>
         <tbody>