Fix upload large files with Dropzone

[belguinan]

When you try to upload larger files, you need to set timeout to more than 30 seconds.

[emptynick]

I think 180.000 seconds is way too much and not really reasonable.
That's more than 2 days. Lets go with a few minutes or even an hour.

[fletch3555]

@emptynick a quick search shows that timeout is in milliseconds, not seconds, so 180k is only 3 minutes

[emptynick]

Whoops, then I didnt say anything.