Fixe the case where the breakout room document conversion is triggered before the actor is brought to life.

When a breakout room is created, all participants are muted except the one who have triggered the breakout rooms creation.

BigBlueButtonActor is now responsible for informing the parent room that one if its children has been terminated.

# Conflicts:
#	akka-bbb-apps/build.sbt
#	akka-bbb-apps/src/main/scala/org/bigbluebutton/SystemConfiguration.scala
#	akka-bbb-fsesl/build.sbt
#	bbb-common-message/build.sbt
#	bigbluebutton-apps/build.gradle
#	bigbluebutton-apps/src/main/java/org/bigbluebutton/red5/client/UserClientMessageSender.java
#	bigbluebutton-client/src/org/bigbluebutton/main/model/users/Conference.as
#	bigbluebutton-client/src/org/bigbluebutton/modules/users/services/MessageReceiver.as

Compiling bbb-fsesl-client

Update demo_footer.jsp with correct link to API docs