Bug Fixes and Minor Improvements

• Added a column to the Pay Bills (Multi-vendor) screen for vendor type, also fixed the “Use same check number” checkbox at the bottom of the form.
• Fixed an issue where order status history was not recording a change from null to a value.
• Changed the warning about missing the new SQL driver, to include a warning that reports will not work.
• Added invoice validation before the invoice payment form opens: now payments can’t be taken on an unpostable invoice.
• Fixed an issue where pressing “Open All” with no filters applied on the invoice/voucher/order list forms would give an error and not complete opening the list of items.