When exporting a lot of historical data, increase wpf_log_max_entries as needed

WP Fusion logs currently has a default of 10,000 entries kept; beyond that data is lost.

Thus, when using the WP Fusion export of historical data (e.g. Users, WooCommerce Orders), once the count of data is known, if that number is, say more than 1/10 of the wpf-log_max_entries number, the user should be alerted to increase/change that parameter, if they want to keep the logs of possible errors during the export.

This would save time and be a big help when doing post-export diagnosis, to investigate any problems in data that had errors.