pep8 changes to cleanup
code style changes to cleanup.
added checkistransiting function to cleanup to check for missing is transiting tags
ran cleanup (added istransiting tags to all transiting planets)
cleanup now checks if a planet has a radius and flags it as an issue is theres no transiting tag. Exclude list exists to remove planets from the check like the SS planets.
added transit time to wts-2b from http://arxiv.org/abs/1402.5416