Bug 19066: Add branchcode to accountlines

Bug 19066: Add branchcode to accountlines

For the purposes of statistics, it appears that it would help many
libraries to have branchcode recorded in the accountlines table. For
payments, the field would contain the code for the branch the payment
was made at. For manual invoices, it would be the code of the library
that created the invoice.

Test Plan:
1) Apply this patch set
2) Create and pay some fees
3) Note the branchcode for those fees and payments is set
   to your logged in branch

Signed-off-by: Lisette Scheer <lisetteslatah@gmail.com>
Signed-off-by: Lisette Scheer <lisetteslatah@gmail.com>
Signed-off-by: Josef Moravec <josef.moravec@gmail.com>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Signed-off-by: Nick Clemens <nick@bywatersolutions.com>