When using the file upload plugin, and passing in a full image URL as the data-mdb-default-file property, the image isn't rendered as a preview if the URL contains a querystring.

I'm generating temporary S3 URLs for my image previews, which have signed parameters contained within a querystring. Because the file upload plugin checks to see if the path ends in a valid extension (eg, '.png'), it won't recognise the URL as an image; even if it is a valid image URL, such as "http://dummy-url.com/image.png?signature=12345".