Trigger and trigger-set event fixes.

In this PR:
* changes the order of resetting IRQ to come after trigger event has been emitted. 
* command -> triggerCmd - bug that prevented light-trigger-set from ever being emitted
* now stores trigger levels on tessel, not just ambient module

Follow up - might be desirable to expose the set trigger levels through the API, though not necessary since they can be accessed as ambient.soundTriggerLevel etc.