fix a problem with local stream and update the code

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

...ork-information/server/methods/userInstabilityDetected.js

...k-information/server/modifiers/clearNetworkInformation.js

...5/imports/api/users/server/methods/userChangedSettings.js

.../imports/api/users/server/modifiers/setChangedSettings.js

.../users/server/modifiers/setUserEffectiveConnectionType.js

...-html5/imports/ui/components/video-provider/component.jsx

...on-html5/imports/ui/services/network-information/index.js