Git commits in Moodle 2.6.x by Pavel Sokolov

commit 9fd75edd911f4802726280a1987e25b386a3a2e1
Author: Pavel Sokolov <pavel.m.sokolov@gmail.com>
Date:   Wed, 24 Sep 2014 15:51:03 +0800
Tag:    v2.6.6

MDL-37707 mod_assign: Prevent user from switching to and from team submissions


commit a2afdf4691c9a67b368ca1fba81c5658e2371aba
Author: Pavel Sokolov <pavel.m.sokolov@gmail.com>
Date:   Thu, 05 Dec 2013 15:56:14 +0800
Tag:    v2.6.1

MDL-43199 assign: fix js error when expanding comments for non editing teachers in assign grading table