No matter when the city's economy turns around as the effects of the coronavirus eventually fade, Phoenix is facing big deficits. Deputy City Manager Jeff Barton outlined a brutal budget forecast for 2021 in a teleconferenced planning meeting on March 26 with Phoenix Mayor Kate Gallego and City Council members who sheltered in place. With many businesses closed, the city's money stream from sales taxes has virtually dried up. If COVID-19's impact lasts thru July, Phoenix is looking at a $26 million…