DC2B-34: Set up Permission

1) Inserting necessary data in changelog.
     -- Delete all the existing user role data.
     -- Add the five new user roles.
2) Change the AuthController to set the default role to 'Researcher' for all non-first login users.
3) Update pages to follow up the permission policies.
4) Add new methods to UserRole domain class.
5) Add one more tag to UserTagLib.

This is the pre-handover commit for this ticket.
Merge branch 'master' of https://github.com/IntersectAustralia/aodn-portal