Ringing Continues Until All ICE Candidates Are Collected

[jfmartinez]

While disabling trickleICE for SIP Trunking the ringing continued on endlessly due to the collection of ICE Candidates and up until the session:started even, this change will stop the ringing when the ICE Candidates start being collected (almost immediately after accepting the incoming session request).

This change also creates a new event for the WebRTCConnection - 'connecting' and for the RtcommEndpoint - 'session:connecting'.

[jfmartinez]

@swgraham I did a hotfix for this issue on the branch issue-78, but due to the changes you've made with the sub protocols I'm not sure where the correct way to stop the ringing on accept dialog would be. Any clue?

[swgraham]

@jfmartinez I just merged your work into develop w/ the subprotocol changes. Can you pull it into your environment and do some testing w/ your apps before I push to master? Thanks