reciprocity/ggrc-core — pull request #1322 by SilasX (2014-05-07 21:31:38+00:00)
Title: Make uniqueness error message recognize email duplicates.

Per [70895092](https://www.pivotaltracker.com/story/show/70895092). Problem was traced to how parser doesn't look for the case of email uniqueness. I added that case and encapsulated this "which-field-was-it" logic into a separate function.