ui: don't enable addtional_file in create (#360)

packages/ui-default/pages/problem_edit.page.js

@@ -274,7 +274,7 @@ export default new NamedPage(['problem_create', 'problem_edit'], (pagename) => {
       await request.post('./files', {
         operation: 'delete_files',
         files: file,
-        type: 'testdata',
+        type: 'additional_file',
       });
       Notification.success(i18n('File have been deleted.'));
       $(ev.currentTarget).parent().parent().remove();

packages/ui-default/templates/problem_edit.html

@@ -100,8 +100,8 @@
         {% include "partials/category.html" %}
       </div>
     </div>
-    {% include "partials/problem_sidebar_additional_file.html" %}
     {% if page_name == 'problem_edit' %}
+      {% include "partials/problem_sidebar_additional_file.html" %}
       {% set owner_udoc = udoc %}
       {% include "partials/problem_sidebar.html" %}
     {% else %}