fixed the sip test changed since the last pull request, also adding more details when a rtmp connection is not successfully established
Merge pull request #434 from mconf/improving-client-checks

Minor change at the sip test
improved the client check so now it uses sip.js and bbb_webrtc_bridge_sip.js from the bigbluebutton-client, so it's going to be easier to maintain; included some new callbacks on bigbluebutton-client related to the websockets; just after the webrtc test, the connection is closed
Merge pull request #435 from mconf/improving-client-checks

Client check - improvements to the webrtc related tests
fixing a bug introduced by last commit
Merge pull request #436 from mconf/improving-client-checks

Client check - fixing a bug introduced by last commit
Merge branch 'master' of github.com:bigbluebutton/bigbluebutton
the sip library was renamed