NEW: added support to drop data in browser view.
NEW: initial support to delete all listed resources in browser view.
NEW: added support to display sizes in KiB and in Bytes.
CHANGE: header and footer in results view don't display if there are cero results.
NEW: delete all listed resources in results view.
NEW: during certain long operations wait cursor is displayed.
NEW: dropping resources with control will delete it instead add it.