automatically allow openExternal only for PDFJS, not all extensions
automatically allow openExternal only for PDFJS, not all extensions

diasdavid/browser-laptop,willy-b/browser-laptop,timborden/browser-laptop,luixxiul/browser-laptop,darkdh/browser-laptop,pmkary/braver,luixxiul/browser-laptop,darkdh/browser-laptop,diasdavid/browser-laptop,dcposch/browser-laptop,timborden/browser-laptop,timborden/browser-laptop,timborden/browser-laptop,diasdavid/browser-laptop,diasdavid/browser-laptop,dcposch/browser-laptop,pmkary/braver,darkdh/browser-laptop,luixxiul/browser-laptop,jonathansampson/browser-laptop,pmkary/braver,darkdh/browser-laptop,dcposch/browser-laptop,willy-b/browser-laptop,jonathansampson/browser-laptop,dcposch/browser-laptop,pmkary/braver,jonathansampson/browser-laptop,luixxiul/browser-laptop,jonathansampson/browser-laptop,willy-b/browser-laptop,willy-b/browser-laptop