Refactor user

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

...tml5/imports/api/2.0/users/server/handlers/emojiStatus.js

...l5/imports/api/2.0/users/server/handlers/listeningOnly.js

.../imports/api/2.0/users/server/methods/listenOnlyToggle.js

...html5/imports/api/2.0/users/server/methods/userLeaving.js

...n-html5/imports/api/2.0/users/server/modifiers/addUser.js

...tml5/imports/api/2.0/users/server/modifiers/removeUser.js

...rts/api/2.0/users/server/modifiers/setConnectionStatus.js

...5/imports/ui/components/actions-bar/emoji-menu/service.js

...ports/ui/components/actions-bar/mute-button/container.jsx

...button-html5/imports/ui/components/actions-bar/service.js

...tml5/imports/ui/components/audio/audio-menu/container.jsx

bigbluebutton-html5/imports/ui/components/audio/service.js

bigbluebutton-html5/imports/ui/components/chat/service.js

...i/components/presentation/presentation-toolbar/service.js

...utton-html5/imports/ui/components/presentation/service.js

...luebutton-html5/imports/ui/components/settings/service.js

...utton-html5/imports/ui/components/user-list/component.jsx

...uebutton-html5/imports/ui/components/user-list/service.js