v1.14.4 fixes 1

page redirect with "en" in title

https://github.com/doc4d/docusaurus/tree/fix/en_page_redirect

side bar localisation fallback

https://github.com/doc4d/docusaurus/tree/fix/sidebar_localization_fallback

sidebar version

https://github.com/doc4d/docusaurus/tree/fix/sidebar_version_localization

fix rename version script if sub folder

https://github.com/doc4d/docusaurus/tree/fix/version_rename_subfolder