Improve Python 3 compatibility for example scripts.
Remove some out of date information about pandas DataFrame reprs
Improve Python 3 compatibility in example notebooks
Rerun BackgroundJobs example NB to save in new format, plus Py 3 fixes
Polish test notebook
Update parallel example notebooks for Python 3
Update some print statements in the docs
Merge pull request #4760 from takluyver/examples-py3compat

Make examples and docs more Python 3 aware