By Paula Skaggs Between our abundance of outdoor concert venues, major music festivals and plethora of smaller auditoriums, Chicago is truly a perfect music city in the summer. (Don’t get us wrong, it’s a perfect city in the winter months too, it just takes a little more energy to remind ourselves of that.) Below, all the concerts you won’t want to miss, from this week through Labor Day weekend. The Chicks at Hollywood Casino Amphitheater, June 15Because you’ve had “Goodbye Earl” stuck in your head for 23 years (and counting) Rufus Wainwright at City Winery, June 16 & 17Because if “watching Ru…