zMin/zMax for picking >> zNear/zFar in screen coordinates

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@29772 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
New window via Window Menu uses global settings

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@29773 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e