Merge remote-tracking branch 'upstream/develop' into fix-chat-issues

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

...n/scala/org/bigbluebutton/core/models/GuestsWaiting.scala

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

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

...c/main/scala/org/bigbluebutton/core2/AnalyticsActor.scala

...message/handlers/guests/SetGuestLobbyMessageMsgHdlr.scala

.../org/bigbluebutton/core2/message/senders/MsgBuilder.scala

akka-bbb-fsesl/build.sbt

akka-bbb-fsesl/src/debian/DEBIAN/postinst

...ain/scala/org/bigbluebutton/common2/msgs/GuestsMsgs.scala

...b/src/main/java/org/bigbluebutton/api/MeetingService.java

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

...tton/api/messaging/messages/GuestLobbyMessageChanged.java

...org/bigbluebutton/api2/bus/ReceivedJsonMsgHdlrActor.scala

...g/bigbluebutton/api2/meeting/OldMeetingMsgHdlrActor.scala

bigbluebutton-html5/.gitignore

...luebutton-html5/imports/api/guest-users/server/methods.js

...ts/api/guest-users/server/methods/setGuestLobbyMessage.js

...button-html5/imports/api/meetings/server/eventHandlers.js

.../api/meetings/server/handlers/guestLobbyMessageChanged.js