Identify mobile users at user list

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

...n-html5/imports/api/users/server/methods/setMobileUser.js

...utton-html5/imports/api/users/server/modifiers/addUser.js

...ton-html5/imports/api/users/server/modifiers/setMobile.js

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

bigbluebutton-html5/imports/ui/components/app/component.jsx

.../user-participants/user-list-item/user-name/component.jsx

bigbluebutton-html5/private/locales/en.json

bigbluebutton-html5/private/locales/pt_BR.json