Multi-Tenant ready

• package.json updated with scripts and versioning information
• Logging Service now features a controller emitter that can be used by its consumer to get notified of event generation by asynchronous query jobs
• Fixed a corner case issue of core class not detecting a Credentials refresh (not updating the Bearer Authentication Header) in multi-tenant / shared credentials scenario
• CortexHubHelper (multi-tenant class) now fully wraps CortexCredentialProvider. It is no longer needed to expose non-multi-tenant classes (i.e CortexCredentialProvider) to multi-tenant apps
• CortexCredentialProvider now features a metadata dictionary that can be used by multi-tenant wrappers to organize datalakes into tenants

CortexHUB Ready

Includes the CortexHelper class to ease development of multi-tenant applications