At the outset of the City Council meeting Tuesday, Mayor Kevin Johnson promised a robust discussion on the subject of redistricting, and robust is what he got. It was another full house Tuesday with nearly 500 people crowding into City Hall, filling every seat in the council chambers and overflowing to makeshift seating areas on the second floor – everyone with the same agenda item on their minds: redistricting. Neighbors, schoolchildren and spokespeople for Latino and African American communities of interest lined up – more than 100-deep – to give their two minutes’ input on where new district boundary lines should be drawn. At the council meeting on Aug. 16, more than 200 people atten