Added wpdb, contactTableName, exportFilenamePrefix variables to BluContact class. Modified BluContact::__construct method to initialize wpdb, contactTableName class variables. Added 'wp_enqueue_scripts' action hook to BluContact::__construct method. Added BluContact::queueScripts method. Added BluContact::loadAllContactRecords, exportAllContactRecords methods. Added BluContact::managementPage method. Modified BluContact::adminMenu method to add management (tools, export) page. Corrected variable name typos on options (settings) page. Added management page (managementPage) controller. Added export controller. Added third-party php-export-data class file.