Moving the meeting life cycle management from bbb-web to akka-apps

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

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

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

...n/scala/org/bigbluebutton/core/running/MeetingActor.scala

...org/bigbluebutton/core/running/MeetingActorInternal.scala

...b/src/main/java/org/bigbluebutton/api/domain/Meeting.java

bigbluebutton-config/bin/bbb-conf

bigbluebutton-web/grails-app/conf/bigbluebutton.properties

bigbluebutton-web/grails-app/conf/spring/resources.xml

...on-web/src/java/org/bigbluebutton/api/MeetingService.java

...ebutton/api/messaging/messages/RemoveExpiredMeetings.java

...uebutton/web/services/ExpiredMeetingCleanupTimerTask.java