Site: Order i18n strings
Site: Add i18n friendly footer

- Falls back to English for the Web Standards site for non-French pages
- Added additional translations to i18n JSON files
Site: Add i18n friendly sitemenu
Site: Add i18n friendly fullmenu
Merge pull request #3787 from nschonni/v4-site-i18n-cleaning

V4 site i18n improvements