tdf#138792: PDF export: export metadata dc:date

Dublin Core attribute dc:date wasn't exported so far in the
current implementation. Looking at the information pointed
by http://purl.org/dc/elements/1.1/date, dc:date is a
vaguely defined field.

Now creation date is exported there, as I've came across
the note of "Typically, Date will be associated with the
creation or availability of the resource" in the resource
linked below.
https://www.dublincore.org/specifications/dublin-core/dcmi-terms/2005-06-13/#:~:text=Typically%2C%20Date%20will%20be%20associated%20with%20the%20creation%20or%20availability%20of%20the%20resource

Change-Id: I0b5f37058f64e3d6d08cb46045a27ccde54ee434
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/162404
Tested-by: Jenkins
Reviewed-by: Sarper Akdemir <sarper.akdemir.extern@allotropia.de>

0 files changed, 0 insertions, 0 deletions