Fix for #4314

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@33815 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Fix for #4312

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@33816 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
#4240 Fixed in trunk

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@33817 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e