Fix signup link in admin area not being disabled

app/views/admin/dashboard/index.html.haml

@@ -40,7 +40,7 @@
       .info-well
         .well-segment.admin-well.admin-well-features
           %h4 Features
-          = feature_entry(_('Sign up'), href: admin_application_settings_path(anchor: 'js-signup-settings'))
+          = feature_entry(_('Sign up'), href: admin_application_settings_path(anchor: 'js-signup-settings'), enabled: allow_signup?)
           = feature_entry(_('LDAP'), enabled: Gitlab.config.ldap.enabled)
           = feature_entry(_('Gravatar'), href: admin_application_settings_path(anchor: 'js-account-settings'), enabled: gravatar_enabled?)
           = feature_entry(_('OmniAuth'), href: admin_application_settings_path(anchor: 'js-signin-settings'), enabled: Gitlab::Auth.omniauth_enabled?)

changelogs/unreleased/ee-16726-signup-not-disabled.yml

+---
+title: Fix signup link in admin area not being disabled
+merge_request: 16726
+author: Illya Klymov
+type: fixed