Two small patches for LedgerSMB 1.2.21

[Armaghan Saqib <..hidden..>]

I have added two small patches to LedgerSMB 1.2.21

(1) Display invoice date on 'All items' report when invoices are checked.
(2) Sale qty is shown with -ve sign on 'All items' report. This helps to 
see correct subtotals when you display sale and purchase invoices for an 
item.

Kindly have a look and let me know any issues or suggestions.

These patches are available at http://github.com/ledger123/ledgersmb/

Regards
Armaghan
--
http://www.ledger123.com/