FEATURE: support SSO website and location overrides

Add location and website + the ability to override using SSO using the `sso_overrides_location` and `sso_overrides_website` site settings.

app/models/discourse_single_sign_on.rb

@@ -117,6 +117,11 @@ class DiscourseSingleSignOn < SingleSignOn
       user.user_profile.save!
     end
 
+    if location
+      user.user_profile.location = location
+      user.user_profile.save!
+    end
+
     unless admin.nil? && moderator.nil?
       Group.refresh_automatic_groups!(:admins, :moderators, :staff)
     end