Refactor publishers and method kickUser to the new pattern

...luebutton-html5/imports/api/users/server/eventHandlers.js

...on-html5/imports/api/users/server/handlers/slideChange.js

...on-html5/imports/api/users/server/handlers/slideResize.js

bigbluebutton-html5/imports/api/users/server/index.js

bigbluebutton-html5/imports/api/users/server/methods.js

...button-html5/imports/api/users/server/methods/kickUser.js

bigbluebutton-html5/imports/api/users/server/publishers.js

bigbluebutton-html5/server/main.js