This fixes recognition of x-axis or y-axis when the coordinate system
is rotated (3D-view). So the labels are rotated correctly.

Change-Id: Iaacfec943f3885c58e99a55585714a79f1d0d9d5
Reviewed-on: https://gerrit.libreoffice.org/38355Reviewed-by: Jochen Nitschke <j.nitschke+logerrit@ok.de>
Tested-by: Jochen Nitschke <j.nitschke+logerrit@ok.de>