Account Withdrawal; inbuilt summary page script updated

The Account Withdrawal inbuilt summary page script has been updated as follows:

1. Added comments at top of script.
2. Added Option Strict On.
3. Fixed various issues that Option Strict uncovered.
4. Updated "Calculation.PaymentFinalDate" to ".Calculation.PaymentFinalDateHoldDate", where setting this date.

Note, point 4 was required after changes made for Account Restructure and was the main reason for updating this script.

Inbuilt script "SummaryPage_AccountWithdrawal_WithdrawalSummary" updated to version 1.01 (12/10/2012).

Note, this script is also used in the Account Refund wizard.