Normalize Group E 1.0

Normalize Group E is primarily a "fixer" script for Category Group E and Sort by Field E scripts, which manage to create group members without email addresses. It can put groups back to email contacts only, or make a parallel group with email contacts only so you have both versions simultaneously, and it can also remove duplicate contacts.

Some sorts of Sort by Field E 2.0 intentionally create duplicates. Since it would be useful for removing duplicates from groups in other circumstances, where you have added them unintentionally, Im releasing it separately here as well.