Allow capitals and slashes in album slugs.

controllers/EditAlbum.php

@@ -130,7 +130,7 @@ class EditAlbum extends HTMLController
 			// Quick stripping.
 			$data['tag'] = htmlentities($data['tag']);
 			$data['description'] = htmlentities($data['description']);
-			$data['slug'] = strtr(strtolower($data['slug']), [' ' => '-', '--' => '-', '&' => 'and', '=>' => '', "'" => "", ":"=> "", '/' => '-', '\\' => '-']);
+			$data['slug'] = strtr($data['slug'], [' ' => '-', '--' => '-', '&' => 'and', '=>' => '', "'" => "", ":"=> "", '\\' => '-']);
 
 			// TODO: when updating slug, update slug for all photos in this album.