Update esdportal-scoresbybcode.tpl.php

Modified the cumulative grade fields for K8. Don't know how to handle the other characteristics.

Would it be silly to create a new array $dataOld that only included econdis_pct, sped_pct, and ell_pct from the esd_k8_2013 dataset? How do these changes affect how HS scores are being displayed.
store all dbs in $data array, modify template per ESDet/esdportal_scoresbybcode#2
refs #3716