Merge remote-tracking branch 'upstream/master' into issue-6261

.travis.yml

akka-bbb-apps/build.sbt

akka-bbb-apps/project/Build.scala

akka-bbb-apps/project/Dependencies.scala

akka-bbb-apps/project/build.properties

akka-bbb-apps/project/plugins.sbt

akka-bbb-apps/run.sh

akka-bbb-apps/src/main/resources/README

akka-bbb-apps/src/main/scala/org/bigbluebutton/Boot.scala

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

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

...igbluebutton/core/apps/users/RegisterUserReqMsgHdlr.scala

.../bigbluebutton/core/domain/MeetingInactivityTracker.scala

...rc/main/scala/org/bigbluebutton/core/models/Users2x.scala

...ton/core/pubsub/senders/ReceivedJsonMsgHandlerActor.scala

...la/org/bigbluebutton/core/record/events/RecordEvent.scala

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

.../org/bigbluebutton/core2/FromAkkaAppsMsgSenderActor.scala

...scala/org/bigbluebutton/core2/testdata/FakeTestData.scala

...ebutton/endpoint/redis/AkkaAppsRedisSubscriberActor.scala