Restore template content when deleting template

When the template content was renamed in
9ee8610da0 I missed doing the same change for the
delete template route.

This commit does the same fix, so that template content is still visible when
you’re about to delete a template (so you can make sure it’s the right one).

app/main/views/templates.py

@@ -92,6 +92,7 @@ def delete_service_template(service_id, template_id):
         else:
             raise e
 
+    template['template_content'] = template['content']
     form = TemplateForm(**template)
 
     if request.method == 'POST':