Merge branch '6658-policy_name_change_trigger_update' into 'develop'

should fix #6658 - prevent change only policy_name to trigger all policy user rewritten

Closes #6658

See merge request ispconfig/ispconfig3!1860

Author: Till Brehm

interface/web/mail/spamfilter_policy_edit.php

@@ -93,6 +93,7 @@ function onSubmit() {
 	function onAfterUpdate() {
 		$this->record_has_changed = false;
 		foreach($this->dataRecord as $key => $val) {
+            if ($key == 'policy_name') { continue; } // Don't trigger update of all spamfilter users if only policy_name is changed
 			if(isset($this->oldDataRecord[$key]) && @$this->oldDataRecord[$key] != $val) {
 				// Record has changed
 				$this->record_has_changed = true;