AO3-5158 Forced logout ?? (#3043)

* I think we need this

* Remove comments

app/controllers/application_controller.rb

@@ -67,14 +67,7 @@ def ensure_admin_credentials
   # So if there is not a user_credentials cookie and the user appears to be logged in then
   # redirect to the logout page
 
-  # before_action :logout_if_not_user_credentials
-  # this was disabled when we found issues:
-  # https://github.com/nbudin/devise_openid_authenticatable/issues/21
-  # https://github.com/binarylogic/authlogic/issues/532
-  # 
-  # We will look back in to this back once we have devises.
-  # if we believe the caching is worth the extra support tickets.
-  # 
+  before_action :logout_if_not_user_credentials
 
   def logout_if_not_user_credentials
     if logged_in? && cookies[:user_credentials].nil? && controller_name != "user_sessions"