#4328 improvement (Comboboxes in Firefox/IE10)

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@33950 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Make sure invalid toolbar string does not kill GeoGebra -- compile error

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@33951 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e