Upload progress/completion widget should only show the uploaded items

[kulmann]

Steps to reproduce

1. Have a folder 1000 text files conveniently lying around on your disk (with actually 1000 text files inside)
2. Upload the folder (via folder upload menu item or drag&drop upload)
3. Wait until the upload is completed

Expected behaviour

Only show the 1000 text files folder as preview entry in the upload progress widget. If any of the files inside fails to upload, show the failed files individually.

Actual behaviour

The upload progress widget shows the 1000 individual files, but never the parent folder.

Motivation

IMO the uploader is not so much interested in the successfully uploaded individual files (only for the failed files). More interested in a preview of the finished upload that can be used for convenient navigation into the target directory.