small changes in sms_server
Merge branch 'master' of https://github.com/rootio/rootio-cloud

Conflicts:
	rootio/radio/models.py
	sms_utils/sms_server.py
Merge branches 'master' and 'master' of https://github.com/rootio/rootio-cloud
Merge branch 'master' of https://github.com/rootio/rootio-cloud
added group call feature to telephony utils