query improvement

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@32265 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
query style improvement

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@32266 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
add layer checking to GeoElement.drawBefore()

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@32268 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e