* Add a new parameter IsRedactMode (SID_IS_REDACT_MODE) to .uno:ExportDirectToPDF
* Make sure the new param makes it into PDFExport as part of FilterData
* Hijack the metafile before being sent to ImplExportPage(), convert to bitmap, and replace the original
* Add a new entry to GenericCommands.xcu to make our button with param visible

* Nitpick: For things to be included in the bitmap conversion,
           they need to be added to the metafile before the conversion
           in PDFExport::ExportSelection(). Things added after that point
           (inside ImplExportPage() for example) will not be bitmapped/pixelized

Change-Id: Iec7020917da920a968ea969b98e53f17eadaa275
Reviewed-on: https://gerrit.libreoffice.org/67108
Tested-by: Jenkins
Reviewed-by: Muhammet Kara <muhammet.kara@collabora.com>