Add docstrings to test_acceptance.py

I just did this as a way of understanding what is being tested.

Also did some basic PEP8 fixes.

These tests do not currently pass for me.
Improve a docstring
Merge branch 'clean-up-tests'
Fix tests after ckanserviceprovider changes

Fix the tests on datapusher's master branch to work with the tests on
ckanserviceprovider's master branch