fix for Element[{{1,2},{3,4}} {{1},{2}},1,1] in CAS

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@32969 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Specific light position for webGL

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@32970 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
don't draw corner coords if one axis is hidden

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@32971 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e