Git commits in Moodle 2.6.x by Heiko Schach

commit 55ab8ab73143a6b939456b0e1736e2936a79d6af
Author: Heiko Schach <heiko.schach@helsinki.fi>
Date:   Tue, 24 Jun 2014 21:25:10 +0800
Tag:    v2.6.4

MDL-46063 feedback: Fix user pictures