Improve readability

app/controllers/admin/base_controller.rb

@@ -14,7 +14,7 @@ module Admin
     end
 
     def user_for_paper_trail
-      current_admin_user ? current_admin_user.id_role_username : 'guest'
+      current_admin_user ? current_admin_user.id_role_username : 'anonymous'
     end
   end
 end

app/controllers/admin/sessions_controller.rb

@@ -33,7 +33,7 @@ module Admin
     end
 
     def user_for_paper_trail
-      current_admin_user ? current_admin_user.id_role_username : 'guest'
+      current_admin_user ? current_admin_user.id_role_username : 'anonymous'
     end
   end
 end

app/controllers/registrant/sessions_controller.rb

@@ -107,6 +107,6 @@ class Registrant::SessionsController < Devise::SessionsController
   end
 
   def user_for_paper_trail
-    current_registrant_user.present? ? current_registrant_user.id_role_username : 'guest'
+    current_registrant_user.present? ? current_registrant_user.id_role_username : 'anonymous'
   end
 end

app/controllers/registrant_controller.rb

@@ -17,6 +17,6 @@ class RegistrantController < ApplicationController
   end
 
   def user_for_paper_trail
-    current_registrant_user.present? ? current_registrant_user.id_role_username : 'guest'
+    current_registrant_user.present? ? current_registrant_user.id_role_username : 'anonymous'
   end
 end

app/controllers/registrar/base_controller.rb

@@ -36,7 +36,7 @@ class Registrar
     end
 
     def user_for_paper_trail
-      current_registrar_user ? current_registrar_user.id_role_username : 'guest'
+      current_registrar_user ? current_registrar_user.id_role_username : 'anonymous'
     end
   end
 end

app/controllers/registrar/sessions_controller.rb

@@ -180,7 +180,7 @@ class Registrar
     end
 
     def user_for_paper_trail
-      current_registrar_user ? current_registrar_user.id_role_username : 'guest'
+      current_registrar_user ? current_registrar_user.id_role_username : 'anonymous'
     end
   end
 end

test/integration/admin/protected_area_test.rb

@@ -1,7 +1,7 @@
 require 'test_helper'
 
 class AdminAreaProtectedAreaTest < ActionDispatch::IntegrationTest
-  def test_unauthenticated_user_is_asked_to_authenticate_when_navigating_to_protected_area
+  def test_anonymous_user_is_asked_to_authenticate_when_navigating_to_protected_area
     visit admin_domains_url
     assert_text 'You need to sign in before continuing'
     assert_current_path new_admin_user_session_path

test/integration/registrar/protected_area_test.rb

@@ -1,7 +1,7 @@
 require 'test_helper'
 
 class RegistrarAreaProtectedAreaTest < ActionDispatch::IntegrationTest
-  def test_unauthenticated_user_is_asked_to_authenticate_when_navigating_to_protected_area
+  def test_anonymous_user_is_asked_to_authenticate_when_navigating_to_protected_area
     visit registrar_domains_url
     assert_text 'You need to sign in before continuing'
     assert_current_path new_registrar_user_session_path