Fixed almost all pylint errors in apache_configurator
Fixed many pylint errors in augeas_configurator.py
Fixed a few PEP8 violations
Fix some `pylint -E` errors
Merge remote-tracking branch 'github/letsencrypt/master' into pylint-errors

Conflicts:
	letsencrypt/client/client.py
Add cover to Travis CI build matrix
Merge pull request #104 from kuba/pylint-errors

Fix some `pylint -E` errors
Merge pull request #105 from kuba/docs

Sphinx docs, various doc fixes
Merge pull request #106 from kuba/travis-cover

Add cover to Travis CI build matrix
Cleaned up augeas configurator
Finish merging fix_pylint_errors
Remove self from function call
Fix apache_configurator docs