Add filter by meetingId in server queries

...html5/imports/api/captions/server/methods/editCaptions.js

...ton-html5/imports/api/group-chat-msg/server/publishers.js

...ton-html5/imports/api/polls/server/methods/publishVote.js

...ton-html5/imports/api/users-settings/server/publishers.js

...ebutton-html5/imports/api/video-streams/server/helpers.js

...mports/api/video-streams/server/modifiers/sharedWebcam.js