I took my mother to the Oak Grill in January. We needed to see the place one last time. Share one last popover. And a manhattan. I’m embarrassed to say I’d never been. So for me eating at the Oak Grill was a new experience in downtown Minneapolis. Looking around the dining room that day I suspect I was the only one for whom this was true. For them, a piece of downtown died last month. I’m not sure what it meant for me. The downtown I miss is shown in the photo above. Sure, I did shop at Dayton’s and…