AV repaint fix

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@32876 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Draw triangles with color and normal (web)

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@32877 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
* light position is float[3]
* web : lights

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@32881 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e