Bug 6934: New features, note added to transaction information, total caculated for...

Bug 6934: New features, note added to transaction information, total caculated for negative types of transaction

To be more specific, the column note from accountlines is now displayed in the table of the transactions.
The grand total is now calculated for neagtive types like Credit or Payment and isn't counted for Write off types.
Credit (return item) 'CR' has been added to drop down of transaction type

Signed-off-by: Hector Castro <hector.hecaxmmx@gmail.com>
Works as advertised

Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>