[239] Manage workflow roles

hyrax/app/controllers/user_roles_controller.rb

hyrax/app/models/collection.rb

hyrax/app/models/rdms_roles.rb

hyrax/app/models/user.rb

hyrax/lib/tasks/create_publication_manager.rake

hyrax/lib/tasks/default_admin_set_for_workflow.rake

hyrax/lib/tasks/setup_hyrax.rake

hyrax/spec/features/create_collection_spec.rb

hyrax/spec/models/user_spec.rb