Restore missing title in addresstemplatedialog.ui

... to what its .src-based equivalent had before fbb1f977

Change-Id: I7db16afe06fca160d798bc1eeac43d6b90c1e1ad
Reviewed-on: https://gerrit.libreoffice.org/11667
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>