Joining Tinder, driving a car, hiking a mountain range: There comes a time when we do normal things and younger people around us begin making comments like: “You’re getting too old for that.” This week on dpa trends, gerontology experts have explained to us just how hurtful discrimination against older people can be. We’ve also passed on some tips on turning aubergines into impressive starters, salads and dips with Jordanian-style moutabal and baba ghanoush. Coman Hamilton,dpa trends & features \——————– TOP STORY: ‘Aren’t you a bit old for that?’ Here’s where you can put your agei…