DATAGRAPH-423 Upgrade to Neo4j 2.0 GA release

* read transaction
* removal of reference node
* fixing tests
* updating dependencies
DATAGRAPH-424 - Updated change log in preparation of RC release.
DATAGRAPH-424 - Upgraded to new Spring Data Build parent pom.

Removed obsolete Spring version declarations. Fixed repository declarations.
DATAGRAPH-422 - Enable CDI repositories to be instantiated eagerly.

From the CDI extension we now use the callback newly introduced in Spring Data Commons to enable it to trigger eager initialization.

See also: DATACMNS-416.
DATAGRAPH-424 - Adapted to API changes in Spring Data Commons.

See also: DATACMNS-414.
DATAGRAPH-424 - Prepare 3.0 RC1 release.

Updated to Spring Data perent 1.3 RC1 and Spring Data Commons 1.7 RC1. Updated changelog and readme. Switched to milestone repositories.
DATAGRAPH-424 - Release version 3.0.0.RC1.
DATAGRAPH-424 - Prepare next development iteration.
Added REST test for GraphRepositories
DATAGRAPH-388 Support for Labels (indexes, queries etc)

* @Indexed(indexType=LABEL)
* added template.isLabelBased(), indexInfo.isLabelBased() and TRS.isLabelBased()
* already reworked some of the derived finders to consistently use a start-less syntax wherever possible
* first stab at dynamic Labels with @Labels and LabelFieldAccessorFactory