Merge branch 'stable-3.0.5' of git.ispconfig.org:ispconfig/ispconfig3 into stable-3.0.5

Author: Till Brehm

interface/web/admin/language_edit.php

@@ -57,7 +57,7 @@
 	$file_content = "<?php\n";
 	foreach($_POST['records'] as $key => $val) {
 		$val = stripslashes($val);
-		$val = str_replace('"', '\"', $val);
+		$val = preg_replace('/(^|[^\\\\])((\\\\\\\\)*)"/', '$1$2\\"', $val);
 		$val = str_replace('$', '', $val);
 		$file_content .= '$wb['."'$key'".'] = "'.$val.'";'."\n";
 		$msg = 'File saved.';