Fixed catalogue to search all item types by default, do not yet show item type in results. Added mysql_real_escape_string to add form inputs for safety checking, checked that deleting item id * or stocknum * does not work
Added Return_Item form to inventory.php
Added code to stop spinners from accepting typed input (i.e. user MUST use spinner to set year and # of copies). Eliminates an issue where items were not added to the database if there was a letter in the year