Merge pull request #10612 from jfsiebel/improve-logs

...ml5/imports/api/users/server/methods/validateAuthToken.js

bigbluebutton-html5/imports/startup/client/logger.js

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

...on-html5/imports/ui/components/error-screen/component.jsx

...on-html5/imports/ui/components/join-handler/component.jsx

bigbluebutton-html5/imports/ui/services/auth/index.js

bigbluebutton-html5/private/locales/en.json