Added complexes to the database, rebuilt a modern Neo4j interface and significance calculation engine

• Added IntAct complex database as a data source
• Modernized Neo4j DB interface.
• Unsupported Java version, bulbs library, and neo4j versions are no more needed.
• Removed dependency on 14.04 or earlier Ubuntu builds.
• Added Gene Identifier overlap conflict resolution
• Corrected a Tax ID parsing bug in Uniprot parser
• Corrected a GeneName parsing bug in Uniprot parser
• Corrected a Cross-Reference tag parsing bug in Uniprot parser
• Updated dockerfile
• Created docker compose file
• Significance calculation now uses Extreme Limit theory (Gumbel Distribution)
• published on Dockerhub
• published on pypi