Create ClientConnections structure and auth-token-validation collection

...uebutton-html5/imports/api/auth-token-validation/index.js

...n-html5/imports/api/auth-token-validation/server/index.js

...n-validation/server/modifiers/clearAuthTokenValidation.js

...oken-validation/server/modifiers/removeValidationState.js

...oken-validation/server/modifiers/upsertValidationState.js

...l5/imports/api/auth-token-validation/server/publishers.js

...-html5/imports/api/log-client/server/methods/logClient.js

.../imports/api/meetings/server/modifiers/meetingHasEnded.js

bigbluebutton-html5/imports/api/ping-pong/index.js

bigbluebutton-html5/imports/api/ping-pong/server/methods.js

...uebutton-html5/imports/api/ping-pong/server/publishers.js

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

...l5/imports/api/users/server/handlers/validateAuthToken.js

...ton-html5/imports/api/users/server/methods/userLeaving.js

...html5/imports/api/users/server/methods/userLeftMeeting.js

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

...on-html5/imports/api/users/server/modifiers/removeUser.js

...ebutton-html5/imports/startup/server/ClientConnections.js

bigbluebutton-html5/imports/startup/server/index.js

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