3.9.1

Core

• Fix warning in admin language tab (#900, #916)
• Fix display title placeholder for new post (#897)
• Fix language negociation for any path (#875)
• Fix 'disable_client_cookies' option ignored (#886)
• Refactoring
  • Disambiguate 'cookie_enabled' internal field -> 'cookie_front_or_admin_found'
  • Refactor url_info without base-path-length (#893)
  • Truncate front/admin config from debug info

ACF

• Fix deprecated JS code for ACF (#890)
• Uniformize jQuery wrapper in ACF

WooCommerce

• Fix CSS path for products (#894)