- add step to check for audio/mic when joining voice conference

...tton-client/src/org/bigbluebutton/main/events/BBBEvent.as

...rc/org/bigbluebutton/main/views/MainApplicationShell.mxml

...-client/src/org/bigbluebutton/main/views/MicSettings.mxml

...uebutton/modules/phone/events/JoinVoiceConferenceEvent.as

...ebutton/modules/phone/events/LeaveVoiceConferenceEvent.as

.../org/bigbluebutton/modules/phone/managers/PhoneManager.as

...org/bigbluebutton/modules/phone/managers/StreamManager.as

...c/org/bigbluebutton/modules/phone/maps/PhoneEventMap.mxml

...bigbluebutton/modules/phone/maps/PhoneEventMapDelegate.as

...ebutton/modules/phone/views/components/ToolbarButton.mxml