Set English as base language with DE fallback

i18n.js

@@ -49,10 +49,16 @@ window.TRANSLATIONS = {
 };
 
 window.getTranslation = function(key) {
-    var lang = (window.CONFIG && window.CONFIG.language) || 'de';
+    var lang = (window.CONFIG && window.CONFIG.language) || 'en';
     var entry = window.TRANSLATIONS[key];
     if (!entry) return key;
-    return entry[lang] || entry.de || key;
+    // Fallback chain: requested language → 'en' → first available → key
+    if (entry[lang]) return entry[lang];
+    if (entry.en) return entry.en;
+    for (var k in entry) {
+        if (entry.hasOwnProperty(k) && entry[k]) return entry[k];
+    }
+    return key;
 };
 
 window.t = window.getTranslation;