- finish wiring up actor system for bbb-apps

...la/org/bigbluebutton/core/pubsub/JsonMsgSenderActor.scala

...uebutton/red5/client/messaging/BroadcastToMeetingMsg.java

...igbluebutton/red5/client/messaging/DirectToClientMsg.java

.../scala/org/bigbluebutton/client/ClientGWApplication.scala

...a/org/bigbluebutton/client/MsgToAkkaAppsToJsonActor.scala

...c/main/scala/org/bigbluebutton/client/MsgToClientGW.scala

...scala/org/bigbluebutton/client/MsgToClientJsonActor.scala

.../scala/org/bigbluebutton/client/SystemConfiguration.scala

...la/org/bigbluebutton/client/bus/MsgToClientEventBus.scala

...tton/client/endpoint/redis/AppsRedisSubscriberActor.scala

...main/scala/org/bigbluebutton/client/meeting/Meeting.scala

...scala/org/bigbluebutton/client/meeting/MeetingActor.scala

...rg/bigbluebutton/client/meeting/MeetingManagerActor.scala

...rc/main/scala/org/bigbluebutton/client/meeting/User.scala

...in/scala/org/bigbluebutton/client/meeting/UserActor.scala