It's not clear to me if the plugin has the following:
1. File/folder sorting, either in the front-end or back-end. I don't see it on the front-end demo, but maybe there is an option to turn it on? or at least maybe the admin has a back-end interface to sort files and folders? In all cases, what is the default sorting behaviour?
2. Is there an easy way for the admin to upload a whole folder structure, with its subfolders and files in 1 step through the back-end interface? Or maybe through importing it from somewhere or via FTP? My client is expected to upload complex folder structures from his computer everyday and he doesn't want to upload the files of each folder separately.
3. What is the list of filetypes that support the "preview" option? On the demo I can only see images, videos, DOC and PDF. Anything else? like Excel for example.
Thanks a lot in advance!