akka/akka — pull request #15456 by patriknw (2014-06-26 14:30:21+00:00)
Title: !per #15436 make persistenceId abstract in NEW classes (for validation)

(cherry picked from commit de3249f7f4b859c3caa232e579d9a3bae7406803)

Conflicts:
akka-samples/akka-sample-persistence-scala/src/main/scala/sample/persistence/PersistentActorExample.scala