Tottenham had to produce yet another late show today as they scraped their way past Luton Town to pick up another three points. With Aston Villa following it up with a win of their own, Heung-Min Son’s late winner was of even more importance than first seemed. For Tottenham, it was yet another example of having to leave it late and win. They’ve made quite the habit of doing that under Ange Postecoglou and it keeps paying dividends. Of course, coming off the back of an international break which involved so many, three points was always going to be the most important thing for Spurs here. A numb…