Table pop-up not translated

When I try to use the editor defined in Catalan (ca), firts it started not showing correctly the Bold, Italic, etc... buttons, but I solved it adding some variables to the js code.

Now I discovered I don't see the table pop-up correctly; I see {$lang_table_general_props}, {$lang_table_cols}, ......
I tried to add the variables to the language file, but it didn't work; how can it be solved?