Git commits in Moodle 2.7.6 by Tony Butler

commit 2ceee45b769f6b29cca59f4527ec68c08e2dfcab
Author: Tony Butler <tonyjbutler@gmail.com>
Date:   Fri, 20 Feb 2015 23:21:54 +0800
Tag:    v2.7.6

MDL-49075 mod_assign: Add assertions to marking workflow unit test


commit 952db2245b9277ecef08223318f48b64b1cffdce
Author: Tony Butler <tonyjbutler@gmail.com>
Date:   Tue, 17 Feb 2015 22:56:38 +0800
Tag:    v2.7.6

MDL-49075 mod_assign: Keep unreleased assign grades out of gradebook