Bug 37108: Cash register statistics wizard is wrongly sorting payment by manager_id...

Bug 37108: Cash register statistics wizard is wrongly sorting payment by manager_id branchcode

With this patch, it displays now the accountlines branchcode and not the
manager's branchcode.

(cr: Marie-Luce test plan)

Setup - before test

Staff accounts
    - have a superlibrarian account
    - create 2 limited access staff accounts, one by branches:
        e.g.
        - staff 1 - attached to branch A
        - staff 2 - attached to branch B

    Both restricted staff accounts should have the following permissions:

        - (circulate) ,
        - (borrowers),
        - in the patron fines: (manual_invoice), and (remaining_permissions)
        - ***ability to switch login library (loggedinlibrary)

Debit type
    - Add few debit types in your Koha (administration > debit types) to ease transactions search.
        e.g: "printing cost", "new card", "lost item"

        ***Ensure that each debit type is configured to "can be manually invoiced"

Test plan

1.  Login with "staff 1" in the intranet
    --> Koha should connect to branch A
2.  Find a "branch A" patron
3.  Add a manual invoice    (e.g printing -- 2.50$ )
4.  Pay this invoice
5.  Log out of the intranet
6.  Login with "staff2"
    --> Koha should connect to branch B
7.  Find a "branch B" patron
8.  Add a manual invoice with a unique debit type and amount (e.g. lost item - 12.80$ )
9.  Pay this invoice
10. Stay connect with "staff2" account, and switch to "branch A" at the top right corner of the screen
11. Find another "branch A" patron
12. Add a manual invoice with a unique debit type and amount (e.g. new card - 5.00$ )
13. Pay this invoice
14. Log out
15. Login with a "superlibrarian" account
16. Run the "Cash register" statistics wizards for "branch A"
        - Go to (Reports > Statistics wizards > Cash Registers )
        - dates: select the current date

Signed-off-by: Chris Cormack <chris@bigballofwax.co.nz>
Signed-off-by: Katrin Fischer <katrin.fischer@bsz-bw.de>