Force nofollow and _blank on links

Hey,

I would like to force that all links are nofollow and _blank. I tried to find a solution via. google, but most of the content was outdated and talked about a fcklink I can´t find.

How do I do this with the latest version ?

I found this, but where do I add it ?

editor.dataProcessor.htmlFilter.addRules(
{
    elements :
    {
        a : function( element )
        {
            if ( !element.attributes.rel )
                element.attributes.rel = 'nofollow';
        }
    }
});