Add show sub entities.
Add show sub entities.

nlzet/SonataDoctrineORMAdminBundle,rschumacher/SonataDoctrineORMAdminBundle,rmzamora/SonataDoctrineORMAdminBundle,pulzarraider/SonataDoctrineORMAdminBundle,rschumacher/SonataDoctrineORMAdminBundle,nlzet/SonataDoctrineORMAdminBundle,EmmanuelVella/SonataDoctrineORMAdminBundle,pulzarraider/SonataDoctrineORMAdminBundle,rschumacher/SonataDoctrineORMAdminBundle,mweimerskirch/SonataDoctrineORMAdminBundle,nlzet/SonataDoctrineORMAdminBundle,pulzarraider/SonataDoctrineORMAdminBundle,rmzamora/SonataDoctrineORMAdminBundle,aitboudad/SonataDoctrineORMAdminBundle,aurelien-vtech/SonataDoctrineORMAdminBundle,rschumacher/SonataDoctrineORMAdminBundle,rmzamora/SonataDoctrineORMAdminBundle,aurelien-vtech/SonataDoctrineORMAdminBundle,nlzet/SonataDoctrineORMAdminBundle,sonata-project/SonataDoctrineORMAdminBundle,aurelien-vtech/SonataDoctrineORMAdminBundle,Bladrak/SonataDoctrineORMAdminBundle