#4165: language submenu replaced by language screen

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@32563 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
fix for #4186 y=x(a/b) in CAS

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@32565 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e