This was done by using an array of representation types instead of a single type for a panel.
The first element of the array is the primary type of the panel, and the rest are secondary types
that can also be displayed in the panel.
PR feedback:
- added test to check number of segments in side panel for 3D only view
- fixed jumping to segment in 3D only view
- fixed exception when adding contour segment in 3D only view
* Opacity, fill and outline properties for active and inactive contours
are now consistent with those for label map segmentations.
The properties for inactive segmentations are applied to BOTH
inactive contours and label maps.
* Activate the selected segmentation for a type when the alpha, outline width, or fill/outline visibility is changed.
