Fix XML formatting for default domain files: fix indentation, remove tabs, remove extra whitespace
Merge pull request #20 from rhusar/domain_config_indents

Fix XML formatting for default domain files: fix indentation, remove tab...
[WFLY-266] Notification Support

* add notifications to AS7 resources description
  notifications are described in :read-resource-description operation if
  the notifications boolean is true
* NotificationDefinition let any resources describe the notifications
  they can emit by registering them in the ManagementResourceRegistration
* add NotificationSupport to let AS7 resource register/unregister
  notification handlers and emit notifications

Notifications emitted by OperationContext.emit(Notification) are
effectively sent at the end of the operation execution if it is
successful. This ensure that the order of notifications emitted by a
single OperationContext will be received in the same order (unless they
are emitted during the ResultHandler execuion).

   JIRA: https://issues.jboss.org/browse/WFLY-266