Merge pull request #10548 from jfsiebel/rework-session-token-check

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

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

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

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