* Refactored out IStoreProject.SaveProject to be fully replaced by SaveProjectAs in usage. * Added 'StageProject' concept to IStoreProject, such that changes to a saved project can be detected quickly. * Introduced FingerprintGenerator to create a almost hashcode for a given ProjectEntity. Can be used to quickly detect changes. ** Fingerprints are now stored in the database for this purpose. * Ensured all string properties of Entities do not share references by DeepCloning values. Related to Issue [WTI-608]