Fix when using multiple entity managers.
Fix when using multiple entity managers.

As per doctrine 2.4 default entity manager is referenced by doctrine.orm.entity_manager.
BboyKeen/TbbcMoneyBundle,hmlb/TbbcMoneyBundle,stiftungswo/TbbcMoneyBundle,TheBigBrainsCompany/TbbcMoneyBundle,stiftungswo/TbbcMoneyBundle,BboyKeen/TbbcMoneyBundle