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/static/js/main.js

@@ -0,0 +1,191 @@
+/**
+ * LeagueLedger Main JavaScript
+ * Version: 1.0.0
+ * Date: April 13, 2025
+ */
+
+// Initialize all components when document is ready
+document.addEventListener('DOMContentLoaded', () => {
+  initializeQrScanner();
+  setupModalHandlers();
+  initializeTooltips();
+  initializeDropdowns();
+});
+
+/**
+ * QR Code Scanner initialization
+ */
+function initializeQrScanner() {
+  const scannerContainer = document.getElementById('qr-reader');
+  
+  if (!scannerContainer) return; // Exit if scanner container doesn't exist
+  
+  // Check if camera access is available
+  if (navigator.mediaDevices && navigator.mediaDevices.getUserMedia) {
+    // QR Scanner library configuration
+    const html5QrCode = new Html5Qrcode("qr-reader");
+    const config = { fps: 10, qrbox: 250 };
+    
+    // Remove overlay once scanner is ready
+    const overlay = document.getElementById('scanner-overlay');
+    if (overlay) {
+      overlay.style.display = 'none';
+    }
+    
+    // Start scanner
+    html5QrCode.start(
+      { facingMode: "environment" }, // Use rear camera
+      config,
+      onScanSuccess,
+      onScanFailure
+    );
+    
+    // Save scanner instance for later use
+    window.qrScanner = html5QrCode;
+  } else {
+    // Camera unavailable, show manual entry form
+    const manualEntry = document.getElementById('manual-entry-container');
+    if (manualEntry) {
+      manualEntry.style.display = 'block';
+    }
+    
+    const scannerElement = document.getElementById('scanner-container');
+    if (scannerElement) {
+      scannerElement.style.display = 'none';
+    }
+    
+    console.warn("Camera access not available");
+  }
+}
+
+/**
+ * Handle successful QR code scan
+ */
+function onScanSuccess(decodedText) {
+  // Stop scanner once code is detected
+  if (window.qrScanner) {
+    window.qrScanner.stop();
+  }
+  
+  // Extract code from URL if present
+  let code = decodedText;
+  if (decodedText.includes('/redeem/')) {
+    code = decodedText.split('/redeem/').pop();
+  }
+  
+  // Redirect to redemption page
+  window.location.href = '/redeem/' + code;
+}
+
+/**
+ * Handle QR scan errors
+ */
+function onScanFailure(error) {
+  // We don't need to show errors for normal operation
+  console.debug("QR scan error: " + error);
+}
+
+/**
+ * Initialize modal handlers
+ */
+function setupModalHandlers() {
+  // Find all elements meant to open modals
+  const modalOpeners = document.querySelectorAll('[data-modal-target]');
+  const modalClosers = document.querySelectorAll('[data-modal-close]');
+  
+  modalOpeners.forEach(opener => {
+    opener.addEventListener('click', (e) => {
+      e.preventDefault();
+      const modalId = opener.getAttribute('data-modal-target');
+      const modal = document.getElementById(modalId);
+      
+      if (modal) {
+        modal.classList.remove('hidden');
+      }
+    });
+  });
+  
+  modalClosers.forEach(closer => {
+    closer.addEventListener('click', (e) => {
+      e.preventDefault();
+      const modal = closer.closest('.modal');
+      
+      if (modal) {
+        modal.classList.add('hidden');
+      }
+    });
+  });
+  
+  // Close modal when clicking outside
+  document.addEventListener('click', (e) => {
+    const modals = document.querySelectorAll('.modal:not(.hidden)');
+    modals.forEach(modal => {
+      if (e.target === modal) {
+        modal.classList.add('hidden');
+      }
+    });
+  });
+}
+
+/**
+ * Initialize tooltips
+ */
+function initializeTooltips() {
+  const tooltips = document.querySelectorAll('[data-tooltip]');
+  
+  tooltips.forEach(tooltip => {
+    tooltip.addEventListener('mouseenter', (e) => {
+      const text = tooltip.getAttribute('data-tooltip');
+      
+      // Create tooltip element
+      const tooltipEl = document.createElement('div');
+      tooltipEl.classList.add('tooltip');
+      tooltipEl.textContent = text;
+      
+      // Position the tooltip
+      const rect = tooltip.getBoundingClientRect();
+      tooltipEl.style.top = (rect.top - 30) + 'px';
+      tooltipEl.style.left = (rect.left + rect.width/2) + 'px';
+      
+      // Add to DOM
+      document.body.appendChild(tooltipEl);
+      
+      // Save reference to remove it later
+      tooltip._tooltipElement = tooltipEl;
+    });
+    
+    tooltip.addEventListener('mouseleave', () => {
+      if (tooltip._tooltipElement) {
+        tooltip._tooltipElement.remove();
+        tooltip._tooltipElement = null;
+      }
+    });
+  });
+}
+
+/**
+ * Initialize dropdown menus
+ */
+function initializeDropdowns() {
+  const dropdowns = document.querySelectorAll('.dropdown-toggle');
+  
+  dropdowns.forEach(dropdown => {
+    dropdown.addEventListener('click', (e) => {
+      e.preventDefault();
+      e.stopPropagation();
+      
+      const menu = dropdown.nextElementSibling;
+      if (menu && menu.classList.contains('dropdown-menu')) {
+        menu.classList.toggle('hidden');
+      }
+    });
+  });
+  
+  // Close dropdowns when clicking elsewhere
+  document.addEventListener('click', () => {
+    const openDropdowns = document.querySelectorAll('.dropdown-menu:not(.hidden)');
+    openDropdowns.forEach(menu => {
+      menu.classList.add('hidden');
+    });
+  });
+}