Git commits in Moodle 2.3.0 by Kyle Temkin

commit 704f062b871a3e67ae14789701f7d4614325ce89
Author: Kyle Temkin <ktemkin@binghamton.edu>
Date:   Tue, 31 Jan 2012 01:45:49 +0800
Tag:    v2.3.0-beta

MDL-31407 quiz: finish_attempt method should not rely on $USER