propagate changes to display name and email columns in user table to anyone it might affect

Signed-off-by: Björn Kinscher <dev@bjoern-kinscher.de>

lib/Action/EmailSync.php

@@ -120,6 +120,7 @@ class EmailSync implements IUserAction
                 $this->config->setUserValue(
                     $user->uid, "settings", "email", $user->email
                 );
+                \OC::$server->getUserManager()->get($user->uid)->triggerChange('eMailAddress', $user->email, null);
             }
 
             $result = true;