doctrine/doctrine2 — pull request #922 by nicoschoenmaker (2014-01-29 10:19:25+00:00)
Title: Two hooks for DoctrineBundle to allow ContainerFilterCollection

Allows the DoctrineBundle to inject a ```ContainerFilterCollection``` that creates filters through dependency injection. See doctrine/DoctrineBundle#245.

Would prefer to inject the ```FilterCollection``` into the constructor of the em, but since they have a cyclic dependency I chose setter injection.