Fix PEP-257 issues in reviewboard/cmdline

Review Request #7245 — Created April 23, 2015 and submitted — Latest diff uploaded

Information

Review Board
release-2.5.x
c23b6a3...

Reviewers

This cleans up existing docstrings and adds missing ones in the
reviewboard/cmdline directory.

Ran pep257 --ignore=D100,D203 reviewboard/cmdline.