Merge pull request #3905 from ritzalam/bbb-2x-mconf

akka-bbb-apps/build.sbt

akka-bbb-apps/scala/Collections.sc

akka-bbb-apps/scala/Test2.sc

...n/java/org/bigbluebutton/core/api/IBigBlueButtonInGW.java

...tton/core/pubsub/receivers/WhiteboardMessageReceiver.java

...core/recorders/events/ClearPageWhiteboardRecordEvent.java

akka-bbb-apps/src/main/resources/application.conf

...rc/main/scala/org/bigbluebutton/SystemConfiguration.scala

...main/scala/org/bigbluebutton/core/BigBlueButtonInGW.scala

.../src/main/scala/org/bigbluebutton/core/MeetingModel.scala

...ain/scala/org/bigbluebutton/core/MessageSenderActor.scala

...src/main/scala/org/bigbluebutton/core/RecorderActor.scala

...src/main/scala/org/bigbluebutton/core/api/Constants.scala

...rc/main/scala/org/bigbluebutton/core/api/InMessages.scala

.../main/scala/org/bigbluebutton/core/api/MessageNames.scala

...c/main/scala/org/bigbluebutton/core/api/OutMessages.scala

...n/scala/org/bigbluebutton/core/apps/BreakoutRoomApp.scala

...n/scala/org/bigbluebutton/core/apps/ChatAppHandlers.scala

...rc/main/scala/org/bigbluebutton/core/apps/ChatModel.scala

...rc/main/scala/org/bigbluebutton/core/apps/LayoutApp.scala