flake8
passed.
JSHint
passed.
Nuke ancient ez_setup.py file.
Review Request #9505 — Created Jan. 20, 2018 and submitted
django-evolution was still using the ancient, deprecated ez_setup
bootstrap. This hasn't been necessary for a long time, and breaks with
modern versions of things.
Ran setup.py develop and saw that things installed correctly on both
python 2.7 and 3.6.
