Being an intern sucks, no matter where it is. For me, it was a juvenile detentions center, and that's only a slight step up from interning at Trump Tower. Shawn Levy ('Real Steel') has made this unfortunate universality the basis of his new comedy 'The Internship.' In the film, Vince Vaughn and Owen Wilson play a pair of guys laid off in their 40s who then intern at an Internet company where thei…