List of lists : fix removing drawables

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@23221 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
List of lists : return correct drawable ancestor

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@23222 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Draw list of 3D drawables in 2D view (if visible)

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@23223 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e