Merge branch 'mail_filter_fix' into 'master'

Till Brehm

2016-03-22 069b2fea73b3613776af8ced5f20fc1bac269121

 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."$";
            }