Fix Bigbank PDF importer

Bigbank uses Estonian number format in their account transactions
statement, namley a comma for decimal separation. Therefore amounts
need to be parsed with the correct language code, and de_CH would
have ignored decimal places.

name.abuchen.portfolio/src/name/abuchen/portfolio/datatransfer/pdf/BigbankPDFExtractor.java

@@ -92,6 +92,6 @@ private void addAccountStatementTransaction()
     @Override
     protected long asAmount(String value)
     {
-        return ExtractorUtils.convertToNumberLong(value, Values.Amount, "de", "CH");
+        return ExtractorUtils.convertToNumberLong(value, Values.Amount, "et", "EE");
     }
 }