Rename collection to video-streams

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

bigbluebutton-html5/imports/api/video-streams/index.js

...n-html5/imports/api/video-streams/server/eventHandlers.js

...pi/video-streams/server/handlers/userSharedHtml5Webcam.js

.../video-streams/server/handlers/userUnsharedHtml5Webcam.js

...luebutton-html5/imports/api/video-streams/server/index.js

...ebutton-html5/imports/api/video-streams/server/methods.js

...ports/api/video-streams/server/methods/userShareWebcam.js

...rts/api/video-streams/server/methods/userUnshareWebcam.js

...mports/api/video-streams/server/modifiers/sharedWebcam.js

...orts/api/video-streams/server/modifiers/unsharedWebcam.js

...utton-html5/imports/api/video-streams/server/publisher.js

...n-html5/imports/ui/components/subscriptions/component.jsx

...components/video-provider/many-users-notify/container.jsx

...ton-html5/imports/ui/components/video-provider/service.js

...orts/ui/components/video-provider/video-button/service.js

bigbluebutton-html5/server/main.js