Adopt the nomad@FAIRDI prototype GUI to become the statging GUI

Create a second app based on the existing components with the following features

• only one view
• allow raw file download
• allow archive file download
• modal for showing processed data and its meta info
• ad public/restricted on the auto commit
• provide a proper login that connects to the repository login
• ad "got it"-table documentation
• rework the shown hashes
• allow multiple uploads of slightly different .zip versions where existing files are skipped
• action to remove faulty calculations