Updates to clean-up code comments, correct customid display, and address missing file and related notes for the new "Select Image" feature.
Custom ID display correction in templates/YOUR_TEMPLATE/templates/tpl_account_history_info_default.php and templates/YOUR_TEMPLATE/templates/tpl_checkout_confirmation_default.php

Other files have minor version changes to sync 1.5.3 and 1.5.4 files that did not change.