The longtime "Dirty Sixth" watering hole Maggie Mae's, which has slowly grown in stature at 323 East Sixth Street since its opening in 1978, now sports seven different bars on two levels over thousands of square feet technically spanning three buildings -- and now it's growing upward. That's at least the case presented earlier this week to the City of Austin's Historic Landmark Commission, with plans from architect Ronn Basquette showing a two-story addition that would rise above the bar's current rooftop terrace, providing more space including a . . .