[FIX] account: bank statement reconciliation come back

Once the bank statement reconcilation done, the back button should not come back to Home when it does not found the bank statement list in the breadcrumb history, but simply perform a history_back action, which will come back to the previous action, the statement form for instance.

opw-625397

addons/account/static/src/js/account_widgets.js

@@ -514,7 +514,7 @@ openerp.account = function (instance) {
                         }
                     }
                     if (!found)
-                        instance.web.Home(self);
+                        self.do_action('history_back');
                 });
         },