Handle polls messages

bigbluebutton-html5/imports/api/2.0/polls/index.js

...utton-html5/imports/api/2.0/polls/server/eventHandlers.js

...l5/imports/api/2.0/polls/server/handlers/pollPublished.js

...tml5/imports/api/2.0/polls/server/handlers/pollStarted.js

...tml5/imports/api/2.0/polls/server/handlers/pollStopped.js

...-html5/imports/api/2.0/polls/server/handlers/userVoted.js

bigbluebutton-html5/imports/api/2.0/polls/server/index.js

bigbluebutton-html5/imports/api/2.0/polls/server/methods.js

...html5/imports/api/2.0/polls/server/methods/publishVote.js

...n-html5/imports/api/2.0/polls/server/modifiers/addPoll.js

...tml5/imports/api/2.0/polls/server/modifiers/clearPolls.js

...tml5/imports/api/2.0/polls/server/modifiers/removePoll.js

...ml5/imports/api/2.0/polls/server/modifiers/updateVotes.js

...uebutton-html5/imports/api/2.0/polls/server/publishers.js

bigbluebutton-html5/imports/startup/client/base.js

bigbluebutton-html5/server/main.js