dimagi/commcare-hq — pull request #681 by yedi (2013-07-17 16:31:51+00:00)
Title: don't save on the lazy migration

some other thoughts -- when deleting a user, we might want to remove references to a deleted user in any of the groups they're a part of? (Or other models that have reference user_ids)

Also if username is a unique identifier, then maybe we should be storing that instead of the user_ids in various places.