Merge topic 'fix-line-representation-serialization'

610eefa7 Exclude display coordinates of the line widget end points from serialization

Acked-by: Kitware Robot <kwrobot@kitware.com>
Acked-by: buildbot <buildbot@kitware.com>
Reviewed-by: Sebastien Jourdain <sebastien.jourdain@kitware.com>
Merge-request: !11484