Changes
→<service_statuses>
* succesful : completed succesfully (may or may not have generated any responses)
* failed_fatal: A fatal error condition was encountered, for instance a bug in Umlaut code.
* failed_temporary: An error condition was encountered, but Umlaut _may_ ''may'' try to run the service again, the error was not fatal, for instance an external service timed out.
These constants are defined in [http://umlaut.rubyforge.org/svn/trunk/app/models/dispatched_service.rb dispatched_service.rb]
If the <status> is failed_fatal or failed_temporary, there may be error information in an <exception_info> block.
