Merge pull request #6711 from jfsiebel/sync-lock-settings-status

...luebutton/core/apps/users/GetLockSettingsReqMsgHdlr.scala

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

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

...imports/api/meetings/server/methods/toggleLockSettings.js

...ports/api/meetings/server/modifiers/changeLockSettings.js