How to restart the Project Server Queue Service with one click?

Once in a while you might notice that the Project Server Queue Service is not processing any jobs and that the jobs keep piling up; a quick and easy way to restart the queue is to put the following four lines in a BAT file and launch it. You could also call it as a scheduled task once a week for instance.

@echo STOP the P12 Queue
net stop "Microsoft Office Project Server Queue Service"

@echo START the P12 Queue
net start "Microsoft Office Project Server Queue Service"