This just adds deprecated before activex support and mentions
to the user to check the release notes for more details.

Change-Id: I4bb7d577fb8f9e2618691e5418b1ddc4a4330ae2
Reviewed-on: https://gerrit.libreoffice.org/21563Tested-by: Jenkins <ci@libreoffice.org>
Tested-by: jan iversen <jani@documentfoundation.org>
Reviewed-by: jan iversen <jani@documentfoundation.org>