adjusts some py3 incompat and fixes vizier bug
Merge pull request #197 from jdnc/fix-py3-encodes

Astroquery compatibility with PY3...
ALFALFA refactor in progress
alfalfa test setup
fixed imports
trivial format change
sdss & alfalfa refac
pep8 refactor
sdss pep8
completed refactor?
added test data for alfalfa
alfalfa tests pass