So I really like this plugin. One thing I'm trying to figure out is external urls. I can set the menu URL to an external domain and make links to pages such as our web hosting email page, google calendar, our form handler application, etc no problem. But i need to add a target tag into the admin menu editor settings to open it in a new tab. any ideas? I know I'll need a target = '_blank' tag after the href tag, but I don't want it to be for all custom menu items either. any ideas?