Add Impressum and QR code management templates

- Created a new Impressum page with legal information and contact details.
- Developed admin link page for linking QR codes to events with form functionality.
- Implemented QR code dashboard for managing QR code sets, including creation and quick actions.
- Added detailed view for QR code sets, allowing addition of QR codes and management actions.
- Introduced static file serving for favicon and related images.
- Established views for static content pages (about, contact, privacy, terms).
- Implemented translation management scripts for compiling and updating translations.

app/templates/admin/index.html

@@ -22,7 +22,10 @@
         
         <div class="mt-10 pt-6 border-t border-gray-200">
             <h2 class="text-xl font-bold text-irish-green mb-4">Quick Actions</h2>
-            <div class="grid grid-cols-1 md:grid-cols-2 gap-4">
+            <div class="grid grid-cols-1 md:grid-cols-3 gap-4">
+                <a href="/qr" class="bg-white border border-irish-green text-irish-green hover:bg-irish-green hover:text-white px-4 py-3 rounded-md transition flex items-center">
+                    <i class="fas fa-qrcode mr-2"></i> QR Code Dashboard
+                </a>
                 <a href="/qr/generate/10" class="bg-white border border-irish-green text-irish-green hover:bg-irish-green hover:text-white px-4 py-3 rounded-md transition flex items-center">
                     <i class="fas fa-qrcode mr-2"></i> Generate QR Code (10 points)
                 </a>