[AIR] updates to MenuButtons and voice and video UIs to hopefully work with new models

...rg/bigbluebutton/air/main/views/MenuButtonsMediatorAIR.as

...rg/bigbluebutton/air/video/commands/ShareCameraCommand.as

...g/bigbluebutton/lib/main/views/MenuButtonsMediatorBase.as

...org/bigbluebutton/lib/video/commands/ShareCameraSignal.as

...ctionscript/org/bigbluebutton/lib/video/models/Webcams.as

...bigbluebutton/lib/voice/commands/MicrophoneMuteCommand.as

.../bigbluebutton/lib/voice/commands/MicrophoneMuteSignal.as

...ionscript/org/bigbluebutton/lib/voice/models/VoiceUser.as

...onscript/org/bigbluebutton/lib/voice/models/VoiceUsers.as

.../bigbluebutton/lib/voice/services/VoiceMessageReceiver.as

...org/bigbluebutton/lib/voice/views/EchoTestViewMediator.as