Work on issues reported in Meetings with Charis and a Customer

Work on issues reported in Meetings with Charis and a Customer

Updated call to glm_members_registrations_header filter to include $page parameter now required.
Changed Payment Codes to having to have a Unique Name.
Fixed problem with "Free" discount code for events (Global worked fine) in regCardSupport.php.
Checkout page now does not display any payment methods if Grand Total is $0.00 for any reason.
Checkout processing now sets payment method to "No Charge" if grand total is $0.00 (free) due to discounts.
Checkout now checks for any account data it can pre-fill in checkout form.
Fixed inability to edit notification subjects. Subject input was laying behind the text editor div.
Added name of application to merchant name for E-Mail from Authorize.net at checkout.
Fixed errors from smarty parameters that are no longer in use in list.html.