Issue #42: Add Solr indexing support for non-variant entities
Added mappers and services after chromosomes, genes, genomic regions, region sets, ontologies and references.
Issue #42: Add Solr indexing support for non-variant entities
Updated mapper and service registries.
Issue #42: Add Solr indexing support for non-variant entities
Added URL field to Reference.
Issue #42: Add Solr indexing support for non-variant entities
Updated GenomicRegion with genomeId.
Issue #42: Add Solr indexing support for non-variant entities
Replaced SQL queries with JPQL for Reference.
Issue #42: Add Solr indexing support for non-variant entities
Changed SQL queries to JPQL queries in the RegionSetManager.