Teach jshint about presenceSocketOnMessage
Implemented tested websocket err handler, clean up issues found by jshint
Implement tested websocket-error message proxy
Prefix presenceSocketOnMessage with _ since only tests should be calling it directly
Clarify some of the XXX comments for maintainability
Make createPresenceSocket broadcast talkilla.presence-pending
Post talkilla.presence-open message once the websocket is open
Refactor the presence connection test and _signinCallback; test needs to be finished and made to pass
create websocket connexion on signin