And rename it to AdES, as the PDF PAdES generation will be affected by
this checkbox in the near future.

Change-Id: I06121e4eb9debac7a55a737a71780c2fa5c4d084
Reviewed-on: https://gerrit.libreoffice.org/30908Reviewed-by: Miklos Vajna <vmiklos@collabora.co.uk>
Tested-by: Tor Lillqvist <tml@collabora.com>