Fixed a currency formatting problem in tform and listform library.

Author: Till Brehm

interface/lib/classes/listform.inc.php

@@ -583,7 +583,7 @@ public function encode($record)
 					break;
 
 				case 'CURRENCY':
-					$record[$key] = str_replace(',', '.', $record[$key]);
+					$record[$key] = $app->functions->currency_unformat($record[$key]);
 					break;
 
 				case 'BOOLEAN':

interface/lib/classes/tform_base.inc.php

@@ -808,7 +808,7 @@ protected function _encode($record, $tab, $dbencode = true, $api = false) {
 					$new_record[$key] = $record[$key];
 					break;
 				case 'CURRENCY':
-					$new_record[$key] = str_replace(",", ".", $record[$key]);
+					$new_record[$key] = $app->functions->currency_unformat($record[$key]);
 					break;
 
 				case 'DATETIME':