add purchase log id as paramter to details headers actions
wpsc_purchase_log_insert is an action, not a filter.  As such, no return is necessary.
Merge branch 'master' of github.com:wp-e-commerce/WP-e-Commerce into pr-purchase-details-action-params

Conflicts:
	wpsc-includes/customer-private.php
use master customer-private.php
Merge pull request #929 from JeffPyeBrook/pr-purchase-details-action-params

Add purchase log id to header section action parameters
Merge remote-tracking branch 'upstream/master' into pr-invalid-purchlog-id-refs

Conflicts:
	wpsc-includes/customer-private.php