makes map.py more readable and fixes docstring errors
makes map.py more readable and fixes docstring errors

sdss/marvin,albireox/marvin,albireox/marvin,bretthandrews/marvin,sdss/marvin,sdss/marvin,sdss/marvin,bretthandrews/marvin,bretthandrews/marvin,bretthandrews/marvin,albireox/marvin,albireox/marvin