Support being able to not display the list of files to be uploaded.

[majortom64]

For situations in which larger numbers of files are expected, it would be nice to easily enable an option to display or not display the files to be uploaded. Ideally, this would be coupled with the option to show some summary data (Total number of files to be uploaded, total size of the upload).

A related request would be able to display a directory hierarchy for files dropped in as a hierarchy (again, it makes it easier to quickly look and verify things are correct.