Couldn't handle messages with no "from" attribute.
Some refactoring to add code that checks if a messages is a headline to the
utils module.
Updated tests. Add sinon so that we can test returned value of spy.
In the process refactored the code being tested.
- Move notifications code in MUC to src/converse-notification.js
- Trigger the 'contactStatusChanged' event in RosterContact and not in
ChatBoxView (which might not exist).
Gets thrown every time converse learns of a supported server service.
Useful when 3rd party code wants to use API methods that depend on the service
being discovered first.
onChatRoomPresence and showStatusMessages have been refactored to give more
detailed information and to also show the reasons given to actions taken by
moderators.
