sum is not exact when ! aggregate …

maybe is it a localization prob ?

```
var localizationobj = {};
localizationobj.currencysymbol = "€";
localizationobj.decimalseparator = ",";
localizationobj.thousandsseparator = ".";
$("#jqxgrid").jqxGrid('localizestrings', localizationobj);
```

and for the sum :

`{ text: 'Montant', datafield: 'mt', width: 120, cellsalign: 'right', cellsformat: 'f2', aggregates: ['sum'] }`

result :

the values in column Montant are correctly formatted (i.e. 1.456,75 or 54,50) but the sum is 1,475.47 …

other question, is it possible to format the sum label ?

Thx

Marc