Major overhaul

- Docker buildx support in CI
- Cypress API Testing in CI
- Restructured folder layout (insert clean face meme)
- Added Swagger documentation and validate API against that (to be completed)
- Use common base image for all supported archs, which includes updated nginx with ipv6 support
- Updated certbot and changes required for it
- Large amount of Hosts names will wrap in UI
- Updated packages for frontend
- Version bump 2.1.0

frontend/js/app/i18n.js

@@ -0,0 +1,23 @@
+const Cache    = ('./cache');
+const messages = require('../i18n/messages.json');
+
+/**
+ * @param {String}  namespace
+ * @param {String}  key
+ * @param {Object}  [data]
+ */
+module.exports = function (namespace, key, data) {
+    let locale = Cache.locale;
+    // check that the locale exists
+    if (typeof messages[locale] === 'undefined') {
+        locale = 'en';
+    }
+
+    if (typeof messages[locale][namespace] !== 'undefined' && typeof messages[locale][namespace][key] !== 'undefined') {
+        return messages[locale][namespace][key](data);
+    } else if (locale !== 'en' && typeof messages['en'][namespace] !== 'undefined' && typeof messages['en'][namespace][key] !== 'undefined') {
+        return messages['en'][namespace][key](data);
+    }
+
+    return '(MISSING: ' + namespace + '/' + key + ')';
+};