* Findblocks cronjob changes
* Find & Store upstream share
* Use last found `share_id` as starting ID or `0`
* Find & Store upstream finder
* Use last found `share_id` as starting ID or `0`
* Use stored information when running propotional payout
* Fetch current checked blocks upstream share from block table
* Fetch previous upstream share of previous block from block table
* Calculated payouts in that range of IDs
* Updated `block.class.php` to store share_id in block and fetch highest `share_id`
