Added Spanish Uruguay-Argentina translation (spanish-uy.php file) and removed execute attribute of catalan.php file

Author: Mauricio López Coria

assets/grocery_crud/languages/catalan.php

@@ -1,5 +1,5 @@
 <?php
-	/** Translated by: Hector Cyc and neocastelli*/
+	/** Translated by: Mauricio López Coria */
 	$lang['list_add'] 				= 'Agregar';
 	$lang['list_actions'] 			= 'Acciones';
 	$lang['list_page'] 				= 'Página';