Merge branch 'pedrobmarin-sharednotes-limit' into bbb-2x-mconf

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

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

.../scala/org/bigbluebutton/core/apps/SharedNotesModel.scala

...on/core/apps/sharednotes/CreateSharedNoteReqMsgHdlr.scala

...n/core/apps/sharednotes/DestroySharedNoteReqMsgHdlr.scala

...tton/core/apps/sharednotes/GetSharedNotesPubMsgHdlr.scala

...cala/org/bigbluebutton/common2/msgs/SharedNotesMsgs.scala

bigbluebutton-client/locale/en_US/bbbResources.properties

bigbluebutton-client/locale/pt_BR/bbbResources.properties

...button/modules/sharednotes/events/CurrentDocumentEvent.as

...n/modules/sharednotes/maps/SharedNotesEventMapDelegate.as

...luebutton/modules/sharednotes/services/MessageReceiver.as

...uebutton/modules/sharednotes/views/SharedNotesWindow.mxml