title: Play 2.1.1 not loading custom Akka dispatcher
body: <p>I'm using Play 2.1.1 and in <code>application.conf</code> I add the following custom dispatcher:</p>
  
  <pre><code># Dispatcher for round-robin actors
  play {
      akka {
          actor {
              rr-dispatcher = {
                  type = BalancingDispatcher
                  executor = fork-join-executor
                  fork-join-executor {
                      parallelism-min = 2
                      parallelism-factor = 2
                      parallelism-max = 24
                  }
                  # messages per actor before jumping
                  throughput = 100
              }
          }
      }
  }
  </code></pre>
  
  <p>I try to use it on an actor:</p>
  
  <pre><code>private val default = Akka.system.actorOf(Props[MessageRouterActor].withRouter(FromConfig()).withDispatcher("rr-dispatcher"), "msgRouter")
  </code></pre>
  
  <p>But I get this message stating the dispatcher couldn't be found:</p>
  
  <pre><code>[info] play - Starting application default Akka system.
  [WARN] [04/20/2013 22:05:12.069] [application-akka.actor.default-dispatcher-5] [Dispatchers] Dispatcher [rr-dispatcher] not configured, using default-dispatcher
  </code></pre>
  
  <p>As far as I've seen this seems to be the correct way to add it. Anyone knows what's the issue?</p>