The venerable New Orleans funk band Galactic purchased the historic music club Tipitina’s in late November 2018 and, according to bassist Robert Mercurio, was making a go of it.“It’s a tight-margin business, but we were making our notes and fulfilling our bills and whatnot. So, it was moving along in a good direction,” he said.That was before the coronavirus pandemic forced shutdowns of public gatherings.Audiences