Add support for non-transactional graph database backends
Make TinkerGraphDatabase the default implementation
Move Neo4J graph backend to its own module
Make Neo4J tests exercise Neo4J and not TinkerGraph
Factor out base class for graphdatabase test suites
Merge branch 'tinkergraph' of github.com:dwins/GeoGit into dwins-tinkergraph
fix version number in neo4j module
Avoid BlueprintsGraphDatabase to acquire and discard several iterators for the same results, and some code style fixes
Add missing (c) headers and other small code style fixes to the graph classes affected by the introduction of TinkerGraphDatabase and neo4j refactoring
remove remaining Neo4J dependency from core and inadvertent dependency on some scala classes
move neo4j graph database to package org.geogit.storage.neo4j
Merge pull request #450 from dwins/tinkergraph

Tinkergraph