Git commits in Moodle 3.3.x by Mark Johnson

commit 6a5d9d07057cabe10f38b60ba1bf4f1f8d0b974a
Author: Mark Johnson <mark.johnson@open.ac.uk>
Date:   Fri, 11 May 2018 22:32:32 +0800
Tag:    v3.3.7

MDL-62408 behat: Correct PHPUNIT_TEST checks in behat_config_util


commit 8edb87a37f486710a36684aecf4c8c27c89741b4
Author: Mark Johnson <mark.johnson@open.ac.uk>
Date:   Thu, 26 Oct 2017 21:59:35 +0800
Tag:    v3.3.3

MDL-60600 core_output: Clear static icon system cache between unit tests


commit cbc3742d716ab337587ffb9043706983fcac25dd
Author: Mark Johnson <mark.johnson@open.ac.uk>
Date:   Fri, 05 May 2017 19:02:24 +0800
Tag:    v3.3.1

MDL-58826 theme_boost: Prevent fatal errors in action menu behat steps