Project: datamanagement
Issue DM-5642: use AstroPy-compliant strings for units in afw.table
With DM-5641, we'll soon be able to get astropy.table views into afw.table objects. That will be a bit more useful if astropy can understand the unit strings we give it, and since we currently don't use those strings as anything more than textual information for humans, we might as well standardize on the terms they've already selected.
Story points: 4