create some sort of admin access

[nicoalee]

In order to improve our support for ongoing issues, we should have some sort of admin access to allow developers to view/fix state for users that are experiencing issues.

At the most basic, this would be some kind of flag in the database attached to the users table that would determine IS_ADMIN or !IS_ADMIN. Code would then be modified to check if (1) the user is entitled to do the action OR (2) the user is an admin.