1. Find partner if ther already is a bank account with the right IBAN;
2. Store (and display) raw import data to help in problem determination;
3. Make it easy to extend the parsing of import data;
4. Apply some clean coding principles.
Fix warning on search view of online.bank.statement.provider
Fix some tests
Button on journal form view to access the wizard
The wizard now returns the bank statements of the journal(s)
Fix wired strings
