Merge pull request #7488 from KDSBrowne/02-poll-published-toast

...html5/imports/api/meetings/server/modifiers/addMeeting.js

...imports/api/meetings/server/modifiers/setPublishedPoll.js

...-html5/imports/api/polls/server/handlers/pollPublished.js

...on-html5/imports/api/polls/server/handlers/pollStarted.js

bigbluebutton-html5/imports/ui/components/app/component.jsx

bigbluebutton-html5/imports/ui/components/app/container.jsx

...s/ui/components/whiteboard/annotations/poll/component.jsx