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Roles and permissions are being refactored for 2.0. You can look at the refactoring that is being proposed here: https://docs.google.com/a/kuali.org/spreadsheets/d/spreadsheet1zknelU2sH3CwkY2LX0ReUgkb94j8yYUikHlhRn8XiG8/ccc?key=0AgJJcukYvy-edDRFNEJrUE9RaUlTOG50YnVRRW16SHc&usp=drive_web#gid=0edit#gid=213354040
A workbook that defines the tables required to load roles and permissions as part of the data build is here: (in draft) (link to come.)