LearnBoost/mongoose — pull request #2364 by benbuckman (2014-10-10 18:52:39+00:00)
Title: Include ValidatorError message in ValidationError. Fixes #2135 (ValidationError string representation shows no relevant details)

This improves the logging of `ValidationError`s, from simply 'Validation Error', to a more detailed 'Validation Error: X is required' style.

Fixes [#2135]