QR code display type

The Barcode question QR barcode type will now correctly display in produce.

Tab delimited CSV

If delimiter=tab is in the CSV connection string then tab separated CSV files will now be supported.

Document Viewer List download button

Document List display type for the Document Viewer question will now show a "View Controls" drop down, with "View and Download", "View Only" or "Download Only" options. "View and Download" is the equivalent of the original functionality.