Port:Fix not setting status if show location is missing but sickbeard.ADD_SHOWS_WO_DIR is set
Port:Change setting status to UNAIRED for future episodes (GC-2397).

Only set status to UNAIRED if current status is SKIPPED, UNAIRED, UNKNOWN or WANTED, should prevent re-downloading of early releases that are already downloaded and deleted (status IGNORED) or archived.
Merge pull request #611 from JackDandy/port_fix_change_setting_episode_status

Port fix change setting episode status