Fix a ton of PEP-8 issues.
Review Request #5509 — Created Feb. 19, 2014 and submitted — Latest diff uploaded
Since ReviewBot has been slacking off, a bunch of issues have slipped in (plus
there are a lot that we just never fixed up). This change fixes almost
everything, with the exception that a few things PEP-8 thinks are problems are
actually preferred.
Ran unit tests.