Reseller Fetch Rewrite

Rewrote the reseller fetch to work approximately 35 times faster.
Average load speeds have dropped from 50-60 seconds down to 1-2 seconds.
This is at the expense of a margin of error of up to 1 megabyte per
account, which means extremely large accounts can be off by up to
100-200MB.
Reseller Cron Initial Commit

Initial commit of the reseller cron job, and commit of the
includes/settings.php file which has been altered to have distinct cache
settings for shared vs reseller.