Add CDNManager, which currently provides an account list
Implements basis of CDN and origin pull support

Supported commands thus far:
* sl cdn list
* sl cdn detail
* sl cdn load
* sl cdn purge
* sl cdn origin-list
* sl cdn origin-add
* sl cdn origin-remove
Resolve rebase conflicts and #pep8probz
CDN Initial tests and fixture
Some pep changes and logics

Add maximum constants
Minor CLI help corrections
Complete CDN tests for 100% coverage (alleged to be passing)
Fix string type checking in Python 3.x
Docblocks, copy-paste doc fix, and OCD placation (basically kidding)
Removes travis-ci irc notifications from the config (until it can exclude forks)
Merge pull request #292 from sudorandom/travis-notify

Removes travis-ci irc notifications from the config
Merge pull request #289 from briancline/cdn

Implements CDN Manager and CLI support (#47)
Adds pylint to tox. Fixes many pylint errors. Many more to go.
Next Round of Pylint fixes
More Pylint Changes
Adds pylint to tox. Fixes many pylint errors. Many more to go.
Next Round of Pylint fixes
Fixes up tickets/messaging/sshkey

* Many pylint fixes
* Ticket listing shows only open tickets by default (listing all is killer for large accounts)
* Simplified some logic for limiting ticket entry output
More pylint fixes
More pylint fixes