Git merges in Moodle 3.6.4 by Andrew Nicols

commit ff2435d89c53639e670ba6d5f98efc3dc26e064a
Author: Andrew Nicols <andrew@nicols.co.uk>
Date:   Fri, 10 May 2019 11:41:47 +0800
Tag:    v3.6.4

Merge branch 'MDL-63959-36' of git://github.com/tobiasreischmann/moodle into MOODLE_36_STABLE

commit fa6a5a4b2974c7ceaea6922f393644222282c065
Author: Andrew Nicols <andrew@nicols.co.uk>
Date:   Thu, 09 May 2019 15:17:01 +0800
Tag:    v3.6.4

Merge branch 'MDL-65479_36' of git://github.com/stronk7/moodle into MOODLE_36_STABLE

commit 6be75c49eca213a3bf469ffab96a09d5032070a4
Author: Andrew Nicols <andrew@nicols.co.uk>
Date:   Thu, 09 May 2019 14:51:36 +0800
Tag:    v3.6.4

Merge branch 'MDL-65435_36' of git://github.com/stronk7/moodle into MOODLE_36_STABLE

commit eff5fd49844cd0f04d923109690258c7354674f0
Author: Andrew Nicols <andrew@nicols.co.uk>
Date:   Wed, 08 May 2019 09:47:46 +0800
Tag:    v3.6.4

Merge branch 'MDL-35396-36' of git://github.com/mihailges/moodle into MOODLE_36_STABLE

commit dde68b8c4796b143ee75682822b219e5efe7ad87
Author: Andrew Nicols <andrew@nicols.co.uk>
Date:   Fri, 03 May 2019 11:12:53 +0800
Tag:    v3.6.4

Merge branch 'MDL-65299_boost_theme-colors_override_M36' of https://github.com/Dave-B/moodle into MOODLE_36_STABLE

commit f3b6ddec28be77bda5cc1aca9d00e9a3f0c8b021
Author: Andrew Nicols <andrew@nicols.co.uk>
Date:   Fri, 03 May 2019 10:02:54 +0800
Tag:    v3.6.4

Merge branch 'MDL-65262-36' of git://github.com/lameze/moodle into MOODLE_36_STABLE

commit d941f7a2bdda2d20de441e4b277124e38c8a5819
Author: Andrew Nicols <andrew@nicols.co.uk>
Date:   Fri, 03 May 2019 08:50:26 +0800
Tag:    v3.6.4

Merge branch 'MDL-64394-accesslog-MOODLE_36_STABLE' of https://github.com/brendanheywood/moodle into MOODLE_36_STABLE