[IMP] account: bank statement reconciliation widget: remove a created line by clicking on it
[FIX] account: bank statement reconciliation widget: do not propose partial reconciliation if there are created lines
[FIX] account: bank statement reconciliation widget: prevent from accidentally creating an 'open balance' writeoff
[FIX] account: bank statement reconciliation widget: prevent from accidentally creating an 'open balance' writeoff by showing the 'create line' form