Add single photo pages, navigateable by arrow keys and touch gestures.

models/Dispatcher.php

@@ -53,6 +53,12 @@ class Dispatcher
 			$_GET = array_merge($_GET, $path);
 			return new ViewPhotoAlbum();
 		}
+		// A photo for sure, then, right?
+		elseif (preg_match('~^/(?<slug>.+?)/?$~', $_SERVER['PATH_INFO'], $path))
+		{
+			$_GET = array_merge($_GET, $path);
+			return new ViewPhoto();
+		}
 		// No idea, then?
 		else
 			throw new NotFoundException();