This ensures that the demo chart of accounts is already installed when the
bank journal account is created for the bank journal that is needed to
test the import. Otherwise, the demo chart from l10n_generic_coa will fail
to install because there is already a journal account in the system.
There is now a common class to test import of statements and their transactions.
Fixes:
- Field in regular expression for mt940 rabo parser was to short for bank-account.
- Wrong name used for reference attribute in mt940 rabo parser;
- Attribute transferred_amount should not have been renamed amount in BankTransaction.