use group chat messages in html5 client

bigbluebutton-html5/imports/api/group-chat-msg/index.js

...rts/api/group-chat-msg/server/methods/sendGroupChatMsg.js

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

bigbluebutton-html5/imports/api/group-chat/index.js

.../imports/api/group-chat/server/methods/createGroupChat.js

...ebutton-html5/imports/api/group-chat/server/publishers.js

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

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

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

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

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

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

...s/ui/components/user-list/user-list-content/component.jsx

...er-list/user-list-content/user-participants/component.jsx

bigbluebutton-html5/server/main.js