handle user_left_message
fixed logging out
remove user after bbb-app's acknowledgement
version and date already set here: https://github.com/antobinary/bigbluebutton/blob/exploring-grunt/labs/meteor-client/app/client/main.coffee#L81-L82
private chat using dbid
now the private chat messages are displayed
fixed starting a private chat via clicking on the name in Options
cleaning up
Removed backslash making a non standard escape character
Cleaned up UI with a message when you cannot chat with anyone.