Developer credits
Git commits in Moodle 2.7.5 by Dave Cooper
commit 0256434964cea10733cb755be35a04b56ce835dc Author: Dave Cooper <dave@moodle.com> Date: Mon, 19 Jan 2015 13:16:48 +0800 Tag: v2.7.5 MDL-48776 core_message: Fixed userid check.
commit 0256434964cea10733cb755be35a04b56ce835dc Author: Dave Cooper <dave@moodle.com> Date: Mon, 19 Jan 2015 13:16:48 +0800 Tag: v2.7.5 MDL-48776 core_message: Fixed userid check.