- Ported MR !297 from master

Marius Burkard

2016-03-23 3c2aca7b9859733ecebcc93940c3f9a3c16cd3a2

- Ported MR !297 from master

 interface/lib/plugins/mail_user_filter_plugin.inc.php

@@ -177,7 +177,7 @@
                } elseif ($page_form->dataRecord["op"] == 'is') {
                    $content .= "^".$searchterm."$";
                } elseif ($page_form->dataRecord["op"] == 'begins') {
                    $content .= " ".$searchterm."";
                    $content .= "^".$searchterm."";
                } elseif ($page_form->dataRecord["op"] == 'ends') {
                    $content .= ".*".$searchterm."$";
                }