Fixed #7166 - Replaced deprecated stomp "send" method with "publish"
The "send" method in the stomp gem has been deprecated since:
http://gitorious.org/stomp/mainline/commit/d542a976028cb4c5badcbb69e3383e746721e44c
It's been replaced with the "publish" method.
Also renamed the send_message method to publish_message more in
keeping with language used in queuing.