use impermanent db for testing
- synchronization to prevent simultaneous access to the underlying transaction
Merge pull request #54 from BluWings/master

CdoUnit
Merge pull request #53 from BluWings/multithreading

synchronization
#14 refactored interceptor mechanism to support chains
Merge remote-tracking branch 'origin/master'

Conflicts:
	impl/src/main/java/com/buschmais/cdo/impl/interceptor/TransactionInterceptor.java
#14 use a dedicated interceptor to handle concurrency
#10 Activated Neo4j REST datastore
#10 minor cleanup
#53 make conucrrency mode configurable
#53 make conucrrency mode configurable
Merge pull request #47 from tbaum/master

use impermanent db for tests