Report: Should we hide output of passing scenarios?

[plocket]

They're messy, but passing tests can be failures in disguise. For example, when some of the unused variables in a Story Table Step aren't used, that might actually be a failure. Counterpoints:

1. Maybe that just shows a need for an enhancement to the Story Table step to let people assert that all variables are used.
2. Part of the motivation for this is how messy passing tests can look. Mainly that's because of the trigger warning, which also makes failing tests messy and hard to pass. Maybe we should fix that before making a decision on this.