Add macros for default and transfer queues
UC-232: Auto wrapup

* Add handler for wrapup options when gen_media terminates
UC-1552: Add support for transfer to a number
Add sleep wsock api
Add timestamp to endchannel event
Use ejrpc2 0.0.1
UC-1443: Outbound Call gadget

* Add api to get release agent state
UC-1443: Outbound Call gadget

* Use new version of ejrpc2
UC-1437 Outbound call from voicemail

* Add voicemail outbound calls to agent channel and gen media
UC-1437 Outbound call from voicemail

* Separate calleridname and calleridnumber in agent state data
UC-1437 Outbound call from voicemail

* Change error message to {error, invalid}