Merge pull request #33 from ClaesNilsson/master

Removed Calendar and Messaging APIs and pointing at frozen W3C Media Capture and Streams API and WebRTC API
Discovery API: Service interface inherits DOM4 EventTarget.
Aligning with W3C style and makes it possible to use standard addEventListener/removeEventListener methods for APIs that use event handling and inherits the Service interface. Jira issue: http://jira.webinos.org/browse/API-39