Merge remote-tracking branch 'upstream/v2.0.x-release' into hide-audio-labels

...bluebutton/core/apps/polls/HidePollResultReqMsgHdlr.scala

...n/scala/org/bigbluebutton/core/apps/polls/PollApp2x.scala

...gbluebutton/core/apps/polls/RespondToPollReqMsgHdlr.scala

.../src/main/scala/org/bigbluebutton/core/models/Polls.scala

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

...uebutton/core/record/events/AbstractPollRecordEvent.scala

...luebutton/core/record/events/PollStartedRecordEvent.scala

...luebutton/core/record/events/PollStoppedRecordEvent.scala

...n/core/record/events/UserRespondedToPollRecordEvent.scala

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

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

...org/bigbluebutton/endpoint/redis/RedisRecorderActor.scala

...main/scala/org/bigbluebutton/common2/msgs/PollsMsgs.scala

.../main/java/org/bigbluebutton/api/ParamsProcessorUtil.java

bbb-lti/.asscache

bbb-lti/.gitignore

bbb-lti/application.properties

bbb-lti/grails-app/assets/javascripts/tool.js

bbb-lti/grails-app/assets/stylesheets/tool.css

bbb-lti/grails-app/conf/BuildConfig.groovy