OSU-Net/cyder — pull request #142 by murrown (2013-07-12 23:03:05+00:00)
Title: Core migration fixes

This contains the migration policy changes requested in https://github.com/OSU-Net/cyder/issues/132 and https://github.com/OSU-Net/cyder/issues/116. Additionally, ```System.email_contact``` has been changed to a ```CharField```, like in Maintain, to allow multiple email addresses.

This pull request changes the schema. Test migrations before merging.