Getting the accept friend to email requestor (Bug #1389906)

This was an oversight from the original commit
647c8549



Change-Id: Ie0d5e0306b2cf329574092387ac4c1a233ec2347
Signed-off-by: Robert Lyon <robertl@catalyst.net.nz>

htdocs/lib/user.php

@@ -2150,6 +2150,9 @@ function acceptfriend_submit(Pieform $form, $values) {
 
     db_commit();
 
+    require_once('activity.php');
+    activity_occurred('maharamessage', $n);
+
     handle_event('addfriend', array('user' => $f->usr2, 'friend' => $f->usr1));
 
     $SESSION->add_ok_msg(get_string('friendformacceptsuccess', 'group'));