Git commits in Moodle 1.5.4 by mchurch

commit 68156b0c367805412f4d2fe46a748fc4ed4e2f60
Author: mchurch <mchurch>
Date:   Wed, 19 Apr 2006 03:34:56 +0800
Tag:    v1.5.4

Fixed bug that wouldn't allow a user who's response was deleted from taking the questionnaire again.