When there is only one ConceptScheme in the hierarchical visualization, it should be selected automatically. When there are more, one should be preselected so that we don't force the user to select first.
It will also contribute to the "one-click viz" use case
When there is only one ConceptScheme in the hierarchical visualization, it should be selected automatically. When there are more, one should be preselected so that we don't force the user to select first.
It will also contribute to the "one-click viz" use case