Upload multiple files at once (+folder hierarchy) by dropping a folder in order to to a massive import

A user need to be able to Drag and Drop multiple an architecture of document in the drop zone(s).

The drag&drop area would take place at 1 place.

• In the browser area => This will add the dragged files in the active folder. Create sub-folders according to the requested hierarchy. Fill the sub folders with the files.

WARNING : If dropping a folder can only work under a specific browser, the solution might be to create a new Import button called "Massive import" which will allow the user to import a ZIP/RAR file which we'll unzip internally in order to create the hierarchy and such.