Refactors function PHPDoc.
Deletes unnecessary files.
Creates a constant to store Attendees table name in Attendee class.
Minor refactor.
Creates Attendee List Table class to handle attendees List Tables. This class extends WP_List_Table.
Adds class-wp-list-table.php file to the plugin. THis class exists in WP but the COdex recommends not to rely on WP implementation so it was copied to the plugin to be distributed with it.
Refactors this class to use the brand new class created to handle attendees list table/