Add an "else" to Trigger Conditions

[nearnshaw]

When I define a Trigger Condition, I will very often want to handle the "else" case of that condition. Today I too often need to define a second Trigger event, and populate it with the opposite condition. This can not only be tedious but also error prone, as I might select the wrong entity.

Ideally I should be able to define the trigger event and the condition once, and specify the true and the false outcomes.