blueimp/jQuery-File-Upload — pull request #3169 by truongminh (2014-05-26 04:39:43+00:00)
Title: Use file.url when file.thumbnailURL not available

If the server does not support imageMagik, there will be no thumbnailUrl.
A workaround is to use file.url.

```html
{% if (file.thumbnailUrl) { %}

{% } else { %}

{% } %}
```