Rounded to integer when using , to separate decimals and %

Issue Summary

The module doesn't work as espected when you want to use a number with decimals separated by , and with %. It rounds the number to an integer.

Example: 3,5% --> 3%

I've fixed this inserting the folowing code in line 188, after " $ret['description'] = t('@name fee', array('@name' => $adjustment_data['name']));"

$adjustment = str_replace(variable_get('uc_currency_dec', '.'), ".", $adjustment);