Add PressedHistoryVersion case class and companion
Change withS3Result to take an optional versionId
Add getHistory and restoreVersion
Add getHistoryForPath, getPressedHistoryVersion and restorePressedVersion to S3FrontsApi
Fix spelling
Add FaciaPressHistory controller to facia-tool
Add routes to FaciaPressHistory
Add project.clj
Add watch and grunt compile tasks