RCPL PAC: Added 'Checked External Data' and 'Description' fields to Biblio Supplemental content type
PAC and RCPL PAC: Added Description retrieval rules actions and default config
PAC and RCPL PAC: Refactored search catalog item Description field for AJAX calls. Consolidated Amazon editorial review request functions into rcpl_pac.module
RCPL PAC: Fixed argument for "Amazon Says" editorial reviews