Unify the values of taxes

Concerning ApplicableHeaderTradeSettlement:
The amount in ApplicableTradeTax.CalculatedAmount is different from SpecifiedTradeSettlementHeaderMonetarySummation.TaxTotalAmount. To avoid this I removed the rounding from totalAmount.

library/src/main/java/org/mustangproject/ZUGFeRD/TransactionCalculator.java

@@ -31,7 +31,7 @@ public class TransactionCalculator implements IAbsoluteValueProvider {
 			VATAmount amount = VATPercentAmountMap.get(currentTaxPercent);
 			res = res.add(amount.getCalculated());
 		}
-		return res.setScale(2, RoundingMode.HALF_UP);
+		return res;
 	}
 
 	/***

library/src/main/java/org/mustangproject/ZUGFeRD/ZUGFeRDInvoiceImporter.java

@@ -6,6 +6,7 @@ import org.w3c.dom.NodeList;
 
 import javax.xml.xpath.*;
 import java.math.BigDecimal;
+import java.math.RoundingMode;
 import java.text.ParseException;
 import java.text.SimpleDateFormat;
 import java.util.Date;
@@ -259,7 +260,7 @@ public class ZUGFeRDInvoiceImporter extends ZUGFeRDImporter {
 		}
 
 		TransactionCalculator tc = new TransactionCalculator(zpp);
-		String expectedStringTotalGross = tc.getTotalGross().toPlainString();
+		String expectedStringTotalGross = tc.getTotalGross().setScale(2, RoundingMode.HALF_UP).toPlainString();
 		if (!expectedStringTotalGross.equals(XMLTools.nDigitFormat(expectedGrandTotal, 2))) {
 			throw new ParseException("Could not reproduce the invoice, this could mean that it could not be read properly", 0);
 		}

library/src/test/java/org/mustangproject/ZUGFeRD/ZF2ZInvoiceImporterTest.java

@@ -20,6 +20,7 @@
 package org.mustangproject.ZUGFeRD;
 
 import org.mustangproject.Invoice;
+import org.mustangproject.XMLTools;
 import org.junit.FixMethodOrder;
 import org.junit.runners.MethodSorters;
 
@@ -81,7 +82,7 @@ public class ZF2ZInvoiceImporterTest extends TestCase  {
 		assertEquals("Stadthausen", invoice.getSender().getLocation());
 
 		TransactionCalculator tc=new TransactionCalculator(invoice);
-		assertEquals(new BigDecimal("571.04"),tc.getTotalGross());
+		assertEquals("571.04", XMLTools.nDigitFormat(tc.getTotalGross(),2));
 
 
 		// name street location zip country, contact name phone email, total amount
@@ -102,7 +103,7 @@ public class ZF2ZInvoiceImporterTest extends TestCase  {
 		}
 		assertFalse(hasExceptions);
 		TransactionCalculator tc=new TransactionCalculator(invoice);
-		assertEquals(new BigDecimal("18.33"),tc.getTotalGross());
+		assertEquals("18.33", XMLTools.nDigitFormat(tc.getTotalGross(),2));
 	}
 
 	public void testAllowancesChargesImport() {
@@ -118,7 +119,7 @@ public class ZF2ZInvoiceImporterTest extends TestCase  {
 		}
 		assertFalse(hasExceptions);
 		TransactionCalculator tc=new TransactionCalculator(invoice);
-		assertEquals(new BigDecimal("11.07"),tc.getTotalGross());
+		assertEquals("11.07", XMLTools.nDigitFormat(tc.getTotalGross(),2));
 
 
 		// name street location zip country, contact name phone email, total amount