Implement Light Mode (Beige) via alternate SASS compilation and runtime switching

assets/js/main.js

@@ -285,6 +285,26 @@
 	// Galerie laden
 	loadGallery();
 
+	// Theme Toggle
+	var currentTheme = localStorage.getItem('mischkomposition_theme') || 'main';
+	updateThemeIcon(currentTheme);
+
+	$('#theme-toggle').click(function(e) {
+		e.preventDefault();
+		currentTheme = currentTheme === 'main' ? 'light' : 'main';
+		localStorage.setItem('mischkomposition_theme', currentTheme);
+		$('#theme-style').attr('href', 'assets/css/' + currentTheme + '.min.css');
+		updateThemeIcon(currentTheme);
+	});
+
+	function updateThemeIcon(theme) {
+		if (theme === 'light') {
+			$('#theme-toggle i').removeClass('fa-sun').addClass('fa-moon');
+		} else {
+			$('#theme-toggle i').removeClass('fa-moon').addClass('fa-sun');
+		}
+	}
+
 	// Login Handling
 	$.get('/api/auth/me').done(function(u) {
 		$('#login-username, #login-password, #login-submit').hide();