add a webrtcDeskShare module (init version)

bigbluebutton-client/build.xml

bigbluebutton-client/src/WebRTCDeskShareModule.mxml

...g/bigbluebutton/modules/users/services/MessageReceiver.as

...uebutton/modules/webrtcDeskshare/assets/images/Cursor.png

...ebutton/modules/webrtcDeskshare/assets/images/Cursor2.png

...ebutton/modules/webrtcDeskshare/assets/images/cursor3.png

...ebutton/modules/webrtcDeskshare/assets/images/cursor4.png

...tton/modules/webrtcDeskshare/events/AppletStartedEvent.as

...gbluebutton/modules/webrtcDeskshare/events/CursorEvent.as

...es/webrtcDeskshare/events/DeskshareAppletLaunchedEvent.as

...gbluebutton/modules/webrtcDeskshare/events/ModuleEvent.as

...on/modules/webrtcDeskshare/events/RecordingStatusEvent.as

...igbluebutton/modules/webrtcDeskshare/events/ShareEvent.as

...button/modules/webrtcDeskshare/events/ShareWindowEvent.as

...ton/modules/webrtcDeskshare/events/StartedViewingEvent.as

.../modules/webrtcDeskshare/events/StopSharingButtonEvent.as

...gbluebutton/modules/webrtcDeskshare/events/StreamEvent.as

...ebutton/modules/webrtcDeskshare/events/ViewStreamEvent.as

...ebutton/modules/webrtcDeskshare/events/ViewWindowEvent.as

...tton/modules/webrtcDeskshare/managers/DeskshareManager.as