Git commits in Moodle 3.1.6 by Adam Olley

commit 0fc3aba77e6357c4a9094d5a90ed0dd7965c371a
Author: Adam Olley <adam.olley@blackboard.com>
Date:   Tue, 02 May 2017 11:11:51 +0800
Tag:    v3.1.6

MDL-58772 mod_feedback: Dont overwrite anonymous entries


commit 471a306b44d11ba5a966b368e3c6b3a4af1fac96
Author: Adam Olley <adam.olley@blackboard.com>
Date:   Mon, 06 Mar 2017 09:29:19 +0800
Tag:    v3.1.6

MDL-58160 coursecat: Use set_many to populate category cache