Servicedesk fixes 20141215

These changes fix the ServiceDesk integration where a few bits of the merge and update didn't work.
I also added a debug message for the tag filters
A logger was purposefully not added to this file as the methods within it apply to both helpers and the ticketing service and this will pipe all logging to the helper file (I know at the moment there is only one line of logging but I don’t agree with the logic of leaving it piping all logging in this file to the helper’s log).

Really the createTagFilters and createVulnerabilityFilter methods should be run in the ticket_service on initialisation (be logged once at this point) and be passed as an option to the relevant ticket_repository methods.

If you do not want to make the logic change (move the methods and add the logging in the ticket_service) I suggest we drop the logging from the ticket_repository for now and change the logic and logging in a future release.