Fix all flake8 errors

Fix all flake8 errors

The flake8 command in test.sh finds no longer finds any errors.
This may form a basis of a jenkins verify job as a sort of 'weak compile-time checks'

The flake8 command will not complain about line length, and will not complain about
django's manage.py file

Change-Id: Ic47cb4fc7ada55e64485661ab6881aef475018ff
Signed-off-by: Parker Berberian <pberberian@iol.unh.edu>