Travis: reenable strict doc checking
docs: fix links
docs: convert missing commands to :command:

This is a placeholder to get the docs building but still allow the text
to remain if needed.
docs: remove links to missing pages

These are pages or references that were not completely removed from the
core docs.
pep8: --help options was broken in no param case
pep8: document exclude patterns
pep8: adjust line length to beyond current max

Lets catch rediculously long lines not 1970s long lines, adjust as
needed by the current decade.