Git commits in Moodle 2.4.x by Huy Hoang

commit e8c07ff705680417ee63aa2b56ee6713607f6eab
Author: Huy Hoang <hoang027@umn.edu>
Date:   Thu, 01 Nov 2012 17:14:45 +0800
Tag:    v2.4.0-rc1

MDL-34695 Wiki Module: add prevention to create new record when userid is 0