Authentication state and administrator role

[0nebody]

Since 0.8 we can return an object with the user name, admin status and state. This PR allows admins to be configured with a role. When persisting auth state is enabled via configuration the user's roles are persisted. These can be used to customise the user experience based on their role permissions.

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(b) The contribution is based upon previous work that, to the best of my knowledge, is covered under an appropriate open source license and I have the right under that license to submit that work with modifications, whether created in whole or in part by me, under the same open source license (unless I am permitted to submit under a different license), as indicated in the file; or

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Signed-off-by: Mitchel Haring [email protected]