PT-1512 - Cleaned up drupal-org.make.

Organized, alphabetized, and normalized.
PT-1512 - Added Disposable Email Checker library.
PT-1512 - Added hook_libraries_info() implementation and wrapper function for Disposable Email Checker library.
PT-1516 - Added function for identifying subaddressed email addresses.
PT-1516 - Added function for extracting domain from email address.
PT-1516 - Fixed coding standards issues.
PT-1516 - Added logging of signatory details to "receive new signature" workflow.
Lowercased domain names extracted from email addresses.
Added "petition.created" log event.
PT-1502 - Added Signatures Queue Schema UML diagram.
Improved signatures_queue.workflow.process_signatures.caught_up event detection.
PT-1428 - Petitions class: drop created, add published in public array
PT-1428 - Petitions display and save update created to published
PT-1428 - wh_petitions.pages.inc file cleanup
PT-1428 - Update API response examples
PT-1428 - Petition detail tpl, wrap $published in if!empty
PT-1428 - Expose created to API response with published date in it
PT-1428 - Update API docs on /developers and API responses to indicate API published changes
PT-1518 - Fixed broken profile display and undefined property notice.
PT-1518 - Fixed undefined index: abuse_count in wh_petitions_admin_petitions().