Data Hub v0.1.0-alpha

First official release of Data Hub:

• Leveraging GMA architecture
• Backend: GMS implementation - support for dataset & user entities
• Frontend: Data Hub Web Application
• Pub-sub: Kafka
• Stream processing: MXE consumer jobs using Kafka Streams
• Generic modeling layer with CRUD on MySQL
• Search support using Elasticsearch
• Supported metadata sources: LDAP and Hive