Fix  Issue 77 : [jain-sip.js] Regression from fix 76: SIP Dialog removed from dialog table systematically
Fix  Issue 79: 	[WebRtcComm.js] Framework not compatible with Firefox WebRtc implementation (nightly build)
Implement Enhancement 80: [WebRtcCommTestWebApp] Add test on new WebRtc API features: Audio/video mute, local video format