Add bilingual support (German/English) with language selector

- Added language selector in top-left corner
- Implemented data attributes for all translatable text
- Created language management system with localStorage persistence
- Updated all JavaScript functions to support both languages
- Added translations for notifications, error messages, and UI elements
- Maintained existing functionality while adding language switching

public/generator.html

@@ -67,5 +67,19 @@
 
     <script src="/js/cookie-consent.js"></script>
     <script src="/js/generator.js"></script>
+    <script>
+        // Verhindert Enter-Taste in Eingabefeldern
+        document.addEventListener('DOMContentLoaded', function() {
+            const inputs = document.querySelectorAll('input, textarea');
+            inputs.forEach(input => {
+                input.addEventListener('keydown', function(e) {
+                    if (e.key === 'Enter') {
+                        e.preventDefault();
+                        return false;
+                    }
+                });
+            });
+        });
+    </script>
 </body>
 </html>