Hide the "undefined" value when the WUI user choose no translation, same as #101
Hide the "undefined" value when the WUI user choose no translation, same
as
#101

Former-commit-id: 249ca5e05b44e15184b1f10ca6369302be7815ff
muslih/alfanous,muslih/alfanous,muslih/alfanous,muslih/alfanous,muslih/alfanous,muslih/alfanous,muslih/alfanous