Removed the dummy monitoring page. Improved the behaviour of scheduled lessons. * If a lesson is already scheduled and we get another reques…
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Removed the dummy monitoring page.Improved the behaviour of scheduled lessons.* If a lesson is already scheduled and we get another request to schedule it, the second request is ignored. This stops a double submission throwing an exception (quartz would end up with non-unique job names).* If a lesson is already started and schedule is called on the lesson, an exception is thrown.* If a lesson is already started as start is called again, then the second start is ignored. This will occur if a lesson is scheduled, then a user goes into monitoring and starts the lesson straight away. The quartz job isn't remove so some time later start will be called again.
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